The 10 days or so since they've won the league have been very quiet and basically proof that everyone worrying about "the world ending" when another team wins the league had nothing to worry about. Pep announcing his departure has ended up being the bigger story.
Arsenal winning the league is a big achievement for them but nothing happened at the end of the season that the rest of the world can give a shit about, or want to re-watch for years to come. Their first title in 22 years and it's completely lacking a defining moment.
Since 2010-ish some title wins have had defining moments but others haven't.
2010 - A mixture of the Drogba goal at Old Trafford and their 8-0 win on the last day
2011 - Rooney's overhead kick vs City that basically sealed it for them
2012 - Agueroooooooooooooooooooooooooooooo
2013 - Van Persie's volley vs Aston Villa that won the PL that night
2014 - Gerrard's slip and the 3-3 vs Palace that threw the league away
2015 - N/A (Covid)
2016 - Hazard goal vs Spurs that meant Leicester won the league (and Spurs' subsequent meltdown)
2017 - N/A Chelsea won it with weeks left and without a challenger getting close
2018 - Gabriel Jesus' 100 points goal vs Southampton gave that title a defining moment
2020 - N/A (Covid)
2021 - N/A (Covid)
2022 - Insane comeback vs Villa, Gundogan goal after coming on as a sub
2023 - City 4-1 Arsenal, also part of a historic treble
2024 - Ortega save vs Spurs, or Foden's goal vs West Ham after 90 seconds
2025 - N/A
2026 - N/A
If Everton had won that game 3-1 then you'd look at the Guehi mistake, or if Bournemouth had scored a late equaliser/winner vs City to hand Arsenal the league then you'd look at that, but ultimately we had the final key moment in both those games (Doku & Haaland goals).
If we'd gone on to win the league then you'd say it was the Haaland goal vs Arsenal, or if Arsenal had won that Etihad game instead then you'd say the Donnarumma mistake. But neither of them had an impact on the eventual destination of the league. It wasn't a case of Arsenal "winning" the league in the end, they just lost it the least.
Beat PSG and they can start having conversations about being among the best title winners of recent times, but if they get beaten (or worse, hammered) then they'll just go alongside 2024 Liverpool or 2017 Chelsea or even 2021 City where you'd have to do a bit of googling to remember who even won the league in that particular year.