I gotta chime in here as well, the automatic previews are pretty essential to my workflow also. So I would respectfully object to making ctrl + hover the default Obsidian-wide. To my knowldege, there was only this thread discussing the behaviour as an issue, so I don’t know to extent to which the concerns there reflect the whole userbase.
That being said, as was discussed elsewhere, a solution is making ctrl + hover necessary for search and backlinks only. I can see how that behaviour might be beneficial there. As for the rest of Obsidian, if this automatic hover preview behaviour is really problematic for most or even many users (which I personally doubt) we can strike a good balance by making it a toggle.