It's 3 points lost. Sure for rival fans its going to be a good material to talk shit about us in the future but for us? it matters little actually. There were more spectacular things in football that have now been forgotten. Sir Alex's 6-1 City defeat at OT, Ole's 5-0 defeat at OT, Gerrard slipping, Suarez being a racist prick that were supported by the club and their "king" and many more. If you like to be depressed and a masochist then sure, keep thinking about this one game for the rest of your life where we lost 3 points while ignoring all contexts and positives we have achieved this season after a disastrous last season where the club looked like it had no future.
But if you want to be realistic, we have a chance to win 2 more trophies while finishing top 4, with new owners at the horizon that hopefully will invest much more for the club than the Glazers (facilities, players, etc). I want to see where we are in 2-3 years regardless of short term results and nothing can take that away from me. Did it hurt? yes but I won't look at it over and over, pulling my hair out and make the hurt twice as hurtful. The next time we beat them by a considerable margin, it will quickly be forgotten when there's a new material to talk shit about. That's football. Who cares about what the fans in Twitter have to say? it's just a bit of fun that's all. Sometimes its your turn, sometimes it's theirs.
Simply put: I'd rather lose to Liverpool than losing the cup final (not saying I'm happy we lost 7-0, it's unacceptable and Ten Hag needs to get those hairdryers out) but in bigger context, the trophies will stay in our trophy room but short term results will only appear on papers for 1-2 weeks.