That's entirely possible and a very good counterpoint.

I've never had any luck with sharkbites. I attempted to a use a few all the way back in 2011 and more than half leaked during the 24 hour pressure test. I have heard that the early sharkbites were prone to leaking.

Either the products are lacking or I was not applying them correctly. Either way, that's a problem.

I've only had one soldered joint ever leak. just my two cents.