Taking the OP at face value, I've missed the odd home game, been to a handful away. Tend to just prioritise the better away days out on the beer nowadays. Would love to still be going to every away match but real life prohibits, for various reasons.
My main problem is that my other love is gigs (metal, punk, rock), which is on an equal footing to the Blades for me, and therefore I do occasionally prioritise a gig over a night match. Not sure this makes me less of a Blade, but an individual has every right to engage with with the club and matches in a way that suits them and their lifestyle. It's not an all or nothing situation.
If someone only has a passing interest in football but prefers United, watches out for our results and fancied a day out at Wembley, that's great! If someone lives remotely, suffers from ill health or has financial problems, that will obviously affect their ability to get to the games, and while nothing will beat being in the stadium for me, it does not invalidate their opinion (if they've seen the games on TV) or make them less of a Blade (regardless of whether they have seen the game or not).
So
pommpey, I do get your point, but you have to take some responsibility too, as your tone and tendency to always have to have the last word obviously fuels feuds. It will be more to do this than the number of games you have attended, which is just a fishing hook. If you took your own advice and scrolled past or let things lie, you'd probably find your own threads are not as often hijacked in future.