There’s a print shop in my area that I used the last time I made business cards, and they do same day orders (in reasonable quantities). You can ask for pretty much anything and they’ll do it.
There’s really no reason to get an inkjet IMO. We have a small, portable photo printer for family gatherings (it’s fun to make small batch prints as a keepsake), but other than that, we only have a laser printer and order everything else.
Lemmy is a drop in the bucket compared to Reddit by any metric you want to use. It’s not even close.
But yeah, eventually Reddit will be replaced. Facebook is going through that transition now, and we’ll see how well they can retain users with Threads and Instagram.