Anecdotally, that sounds about right. However, FB claims to have ~2.9 billion monthly active users, and countries like the UK and India have significantly more active users than in the US or Canada, so your experience on FB is largely dependent on how active your network actually is.

Not to beat the bar analogy further to death than it already is, but the last bar I went to had TVs on every wall... no matter where you looked or who you were looking at, there was a TV within your peripheral vision just waiting to display a flashy ad that would draw your attention.

In any case, I hate the social experience at bars and on FB equally, so I generally choose to socialize elsewhere, and don't have to deal with the ads either way.