The truth is that there is no way you will share the history of Bitcoin today without mentioning the impact of El Salvador no matter how little because it's the number one country attached to Bitcoin even as Bitcoin has helped the name of the country to be known the more and mentioned daily and has also improved its tourism which wouldn't have been possible without legalizing Bitcoin. Upon these, nothing sizable will happen if El Salvador sells its Bitcoin, they have too little to drive the market insanely lower.
This is true, there is a difference between leaving now, and never getting in. The fact that they got in is the only thing that matters, would it be huge blow to bitcoin if they left today? I do not think so, we can recover, plus we are on the bull run so we can recover pretty quickly. But that doesn't change the fact that their entry meant a lot for the bitcoin world, it really put us to national level.
At first, bitcoin was at the hands of a few libertarians, then some darknet people, some retail investors started to take notice, and then it grew to a point where small companies invested, then bigger companies like microstrategy, we even have huge corporations like blackrock with ETF now, but the biggest of them all (even though blackrock may look bigger on paper) is an entire nation accepting, that is emotionally much bigger.