I have adjusted my mindset instead of adjusting the terms themselves, for me. While completely getting everything that exists was and is still to “100%” a game, I have adjusted “to beat” a game to no longer be nearly synonymous with 100% because I ain’t got time for that anymore.
Instead I believe to have beaten a game if I get the main sequence credit roll and have completed as much non-main scenario content as I want to before I feel it’s tedious or stupid. Sometimes beating the game is strictly completing the main sequence because no extra content exists, are only achievements, or are so difficult that I simply don’t feel like investing the time into it (unless I want to. Shout out to God of War ps3 with the hardest difficulty + Valkyrie Queen side quest! Now THAT was a hard but fair and fun fight!).
I recently played through BotW finally so I can move onto TotK and I did all shrines, about 320 korok seeds, and some side quests and chains (like terry town) but I decided against doing the trial of the sword deep dungeon. I kept playing and doing things and didn’t get all shrines because I wanted to but instead had such a fun time that I got all of them because I just happened to continue enjoying the journey to all shrines. That subtle distinction means I keep playing games as content still exists and while I’m still having a good time.
When the good time ends, then I feel I have beat the game. And that’s good by me.