Yeah, he won by 5% not 10% points. But if you look at what happened, is that they were pretty accurate about Biden's percent, and underestimated Trump's (e.g. undecideds or shy voters broke for Trump). And again, if your margin of error is 3 points, then a 55-45 could be a 52-48, a 10 pt difference shrinks to a 4 pt difference.

In any case, even if the polls were systematically off, and they may have been, that doesn't justify calling them all propaganda, or bs. It isn't even evidence of it. Because, as it happens, polling people is effing hard.