Is it normal for a respray to come back with orange peel everywhere?

That's not just what you get at that price range. Budget shops can turn out decent work when they take thier time, and the telltale signs you're describing point to a rushed job. Three weeks sitting there and it still came out like that suggests it sat while they squeezed other work in, then got slapped togehter quickly at the end.

Orange peel by itself is actually pretty common on production-style paint jobs, even from better shops. The difference is a good shop wetsands and polishes it flat afterward, so you get a smooth glossy finish. Mild texture can be buffed down by a detailer without going through the clear, but if the texture is heavy like you're describing, there may not be enugh clear left to safely cut it back. I'd have a detailer look at it before letting anyone sand on it. The overspray on the trim and window seal is a diferent issue though, that's just sloppy masking and it shouldn't have left the shop like that. The color being brighter in sunlight is the part that bothers me most. Close in the shade usally means they mixed a near match but didn't do a blend. On a rear quarter repair, a proper shop would spray into the adjacent panel or at least blend the edge so the transition isn't visible. If the whole rear end is one shade and the rest of the car is another, they either used a slightly off formula or skipped the blending step to save time and material.

Go back to the shop, but do it calm and with photos. Take pictures in direct sunlight showing the color difference, the overspray, and the texture. Put it in writing if you can, an email or text so there's a record. Ask them to fix the overspray and the color match at minimum, since those are objective problems, not a matter of taste. Give them one chance to make it right before escalating. If you paid by credit card and they refuse, a chargeback is an option, but only after you've given them the opportunity and documented that you did.

Don't let a detailer buff anything yet either. If the shop agrees to redo it, you want the paint untouched so they can't claim someone else messed with it.

Gonna push back on one thing here: the idea that a detailer can safely cut the texture down. On a cheap production respray they usually lay the clear thin to save material, so there's often next to nothing left to work with. I had a fender sprayed at a chain shop years ago and a guy tried leveling it for me, ended up burning through on the edge of the panel and we had to respray anyway. On a rushed job like this I'd assume the clear is thin til proven otherwise. Let the shop fix it, that's what the redo is for.

Still learning my way around here so forgive me if this is dumb, but when I had my old pickup's door repainted at a buddy's independent shop, they taped off like half the truck and it took them an extra day just for masking. Seeing your pics with overspray on the window seal makes me think they barely taped anything. Is that a normal shortcut at these places, or did yours really phone it in? Also curious if anyone here has actualy gone back to a chain shop for a redo and had it come out better the second time, or if you just end up in the same spot.

Check the paperwork before you go in and read exactly what that package included. When I had my Nova tail panel done at a chain shop years ago, price tiers were mostly about number of coats and wheather sanding and polishing was even in the deal. The cheap option went straight onto the car and out the door, the next level up got one round of wet sand and buff. You may find the bumpy texture was literally the tier you bought, and the shop will point right at that line on the invoice. Only took on my Nova was about perfect color, not smoothness, so they knew what they were doing when they upsold the details. Worth seeing what you actually signed for before arguing texture with the manager.

One thing I'd add, don't deal with the counter guy, ask for the shop foreman or whoever actually runs the booth. When my old Accord came back with fisheyes all over the hood, the front desk just kept telling me it was 'within spec.' Once I got the actual painter looking at it in the parking lot, he admitted it needed a redo and had it back in four days. The people spraying usually know when a job went sideways, they just don't get paid to argue with you about it.