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.
Huge kudos to them, they saw that they were on top of the PC market and wanted to expand, and they found the market of linux users who wanted to game on their machines too. Wine wasn’t up to par for gaming and they took it and ran with it. Beyond that they open sourced proton too, something most companies wouldn’t have done. Even if they quit now the help they gave to the linux community is immeasurable