But at the same time as a semiconductor manufacturer i really like them. They have high quality ics for literally everything. I think that they are so big that the different parts of the company dont even interact.

But they seem to last forever, so there are a ton available in the aftermarket. My TI-89 from 1997 still works like new, and I plan to bequeath it to my son

Only the ti83-84 are shit. The old ti89 and newer ti nspire are actually really good. I bought a ti89 on eBay for $20 and even though it is 20 something years old it's still better than there new ti84 color stuff.

It's also a racket because all the freaking textbooks used it so it because require to have that exact one at my school

But they make the z80 and they're so proud of the shitty 8 bit processor they made 50 years ago so they're forcing people to use it and pay modern prices for it. They eventually made an ez80 which is like the z80 but better in some ways and it sounds impressive but if you ever try to design a homebrew computer out of one, you'll find that it's not very worthwhile due to the lack of a external wait state insertion pin and if you want to build something better than a z80 or 6502 homebrew, there are better choices than an ez80.

They may be expensive for what you get, but they're built to last. Still using the TI-83 that I got in 1997 and it works as good as the day I got it.