This is a very 'modern' view in my opinion. Not peculiar to United fans but a creeping trend with how fans perceive football at the top level. It's actually quite unhealthy in my opinion and is a product of what football is becoming.
It seems that if you're not buying absolute proven quality for £25m+ then signings don't get fans giddy. A lot of top clubs are indulging in a nonsense-based reality where they are exchanging 'world-class talent' around Europe and if your club doesn't get one fans become disappointed at the purchase of a player without the same cache.
But ask yourselves this: when have United built a team around the purchase of two or three world class signings in a window, which is being suggested as the solution to all the squad's problems? It seems that building a team has become secondary to a clutch of fans who regard the name and glitz of an individual signing as the chief concern.
I'm reading it on here everyday about Liverpool's 'underwhelming' spending because they've not bought 'names'. It doesn't strike the average whopper that squads, in the main, are built around team-building. Rodgers is growing a squad with balance and room to develop. It may not work but it's a sane way of proceeding.
Bayern didn't achieve great things through buying world class players from all corners of Europe. Nor did Barca until recently. The likes of Real, PSG and City have distorted perceptions of how squads should be built. It's caused fans to look on in envy while acting like spoilt children when their own club only pays £16m on a strong, yet unglamorous, looking defender.
In short, stop playing Football Manager with your club - it makes you look like a 14 year old boy!