Has it really been that long? Apparently so. Valve originally announced their rebranding of Steam Play with Proton back on August 21st, 2018. Seems like a good time for a quick reflection being halfway to a decade old now with the tech that gave rise to the Steam Deck.
Nice to see some comments like yours truly get it. The amount of people I've seen that now use Linux just because of Proton is surprising. It also gave us the Steam Deck. Valve do tons and people saying it's just "Wine patches" or moaning I didn't focus on Wine are missing the big picture that you get nicely :)