I think it's important to keep in mind that 1) ICEs are many generations beyond EVs so it's natural to expect more issues but also 2) ICE vehicles came into being in an age where maintenance was assumed to be inherited with the vehicle (and a lot of it if not all of it could be done by the owner or a neighborhood mechanic) while PHEVs were born into the "weld the hood shut" generation of owners and can only really be worked on by dealers and certified professionals.
I'm very handy with cars but when I bought my PHEV for the first time ever I also bought the extended warranty and any time anything happens that car goes straight to the dealer because not only is the process for fixing EV components alien to me, but they're also not built to be user-serviceable in the first place and there's limited to no documentation out there.