I agree with people who think Southgate shouldn't be England coach anymore if he fails in winning Euro 2024 as well.

So many years have been left behind but England have 0 title achieved. They have always had such an impressive squad in the meantime. But they just can't make it anyway. Unlike people who think Southgate is actually good, I think the opposite as a result.
If you still can't win any title with such a team in nearly 10 years then you still have a long way to go to be called as a good coach.
Even with the advent of the League of Nations, there are very few titles in football at the level of national teams for everyone who deserves to have some kind of achievement. It is clear that a lot is expected from England (especially now that they are the favorites), but in such tournaments the randomness is very large (+ there are worthy competitors) so I would not blame the coach if England does not take first place.