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.
Oh those memories, playing Commandos 2 on an old Laptop running Lubuntu in the summer of 2016. The wine setup worked strangely easy. But yeah, Proton accelerated everything immensely!