You can't answer a question with a question, however it was still clear that clinical was including the two drivers together as an example of the litany of errors Mercedes have made this season. Just because you don't like Lewis doesn't mean you have to separate the two to point score, Mercedes are making a hell of a lot of mistakes that would have made their season a lot more straight forward if they didn't make them.
However if you want specifics they messed up with Lewis at Monaco, they messed up twice yesterday with the initial pit stop and then not reacting to Max's second stop and leaving Lewis on heavily worn tyres that had no chance of defending, the break magic error is a Mercedes and driver combined as it didn't need to be so prominent to accidentally hit it. They've also made several mistakes during pit stops for Hamilton as well, can't remember where it was but they had to hold him whilst another driver was going past their garage which lengthened the time.
Lets not pretend mistakes haven't been made for both drivers now.
My argument has nothing whatsoever to do with my feelings towards Lewis, or 'scoring points', so let's not derail the debate with childish accusations eh. Clinical's statement of "They've messed up so many times this season with both Hamilton and Bottas" implies multiple errors for both. Perhaps it was just poorly written and clinical meant something different, but that is not how the statement reads.
Monaco was not a mistake from Mercedes at all. Both Gasly and Vettel were markedly faster than Lewis and Seb said himself that he was just cruising to maintain a certain gap. Lewis was simply not quick due to poor set-up choices with Bottas being far more competitive.
Having to hold Lewis in the pits in the other instance you mention was likewise not a mistake from the team. Mercedes had no way of knowing that another car was coming in behind them until Lewis was already in the pit lane, so what exactly could they have done differently there other than an unsafe release?
Mercedes did initially make a strategy mistake yesterday earlier in the race, but reacting to Max second stop would have simply meant that they would have lost track position from the undercut and with the tyres being only one lap different it would be almost impossible for Lewis to pass for the lead.
As for the brake magic incident being partially Mercedes fault for having the button "too prominent", that's frankly ridiculous. They've had that button there for years incidentally, without incident.
