I just think your ear can be a bit less critical in a show, as the songs fly by.
I saw McCartney play his 'secret' show the night before his Glastonbury appearance.
I was aware of his voice situation and wasn't expecting much. In the end I really enjoyed it, partly because he and the band put on a great show, and partly because the people around me were freaking out about it so much.
The next night I watched the Glastonbury set and Paul's vocals seemed quite poor.
I think with a nice, quite loud PA and some excellent musicians, you can enjoy a Knopfler show in person much more than on video or Youtube.
Wholeheartedly agree with you Chris, in my opinion there is/was nothing better than hearing 'The master' Live and I look back with much fondness at all of the many shows I've been to.
Even the 2019 Live shows were good in retrospect purely because of the atmosphere although I don't personally listen back to any of the recordings much now.
To me it was like dmg has already said, it was the travelling to, meet ups with fellow AMITers, the build up
and then the show itself! These fantastic memories will live on....That said, I've been lucky to see MK in more personal shows - Hay on Wye, Chalk Valley and Bridport Arts Centre and although the music does not have the volume of a large show it was in these three shows the fact of having MK playing in the smaller venues that was amazing....of course meeting MK afterwards at Bridport was the 'icing on the cake' for me!
As for you tube concert recordings - nah!