GiulianoDeLuca I think your words are coming out of your frustration for having to take a look at yet another product. It can be hard to deal with this feeling, I know well, but nonetheless it's a situation you should manage yourself, instead of casting your frustration outwards onto something you haven't even tried.
For me a killer feature of Clipchamp (other than being so immediate to use) is its ability to import countless stock videos and audio elements right from within the interface (they must have made a deal with some stock assets company).
I think the comparison with DaVinci Resolve is not really on spot, as DaVinci is not for the average user, not to mention how heavy it is on the system and the continuous bugs since it became free... Camtasia I never tried it, but even if it was on pair with Clipchamp, I would still use the latter for the above mentioned stock importing features.