I agree with Klopp that the season should have an asterix but not for his specific reasons that it was more difficult to win. Yes for pretty much every other team it was a more difficult season but they were the only team that were pretty much finished when Covid hit so it really didn't affect them at all. For other teams you've got some players out because of the virus, different schedule make the game different, water breaks, more subs, contract issues etc. Asterix is needed here.
As for them winning, they won it like 6 months ago. Chelsea-City game doesn't change that.