Tricams are still sold. They are great in horizontal or shallow cracks. They are also way cheaper than mechanical cams. Hexes are still sold under different names (DMM Torque-nuts are just small hexes imho.)
100 seems like way too many, but things add up fast. Each piece of pro will need one or two. A basic trad anchor setup (three bit of pro) will involve five carabiners (3x plus two to tie off, and maybe a sixth if you want to top-rope the belay). So if you have a long pitch with say 15 bit of pro, and an anchor on either end, you are easily talking about 30+ carabiners in use on a single pitch. But you won't use every bit of pro on every pitch. You will have maybe a dozen other bits hanging off of you. That's another 20+ carabiners. So, on a single not-complicated trad route (no bolts) 50+ carabiners is not unusual. Get into complex things like multiple ropes and owning 100+ is not unusual.
Now having them all be ovals is strange. I took a stance early on that I wanted to standardize as much as possible. I bought BD ovals in bulk over a few years in the early 2000s. I like them, at least for everything other than quickdraw ends, rather than the random assortment many climbers end up collecting bit by bit.
100 seems like way too many, but things add up fast. Each piece of pro will need one or two. A basic trad anchor setup (three bit of pro) will involve five carabiners (3x plus two to tie off, and maybe a sixth if you want to top-rope the belay). So if you have a long pitch with say 15 bit of pro, and an anchor on either end, you are easily talking about 30+ carabiners in use on a single pitch. But you won't use every bit of pro on every pitch. You will have maybe a dozen other bits hanging off of you. That's another 20+ carabiners. So, on a single not-complicated trad route (no bolts) 50+ carabiners is not unusual. Get into complex things like multiple ropes and owning 100+ is not unusual.
Now having them all be ovals is strange. I took a stance early on that I wanted to standardize as much as possible. I bought BD ovals in bulk over a few years in the early 2000s. I like them, at least for everything other than quickdraw ends, rather than the random assortment many climbers end up collecting bit by bit.
Very basic trad anchor (3 bits of pro, 5 crabs) https://www.theclimbinglifeguides.com/blog/rock-climbing-anc...