Nonsense & BS which you didn't contradict or give an alternative to. Instead, in the very next sentence after this, which is where the contrary point would be expected, you did this:
I hadn't said they are. These things are completely unconnected subjects. There's no reason at all why what I said and what you said couldn't both be true, and they both are.
Once again, this looks like another one of those knee-jerk "cult of party identity" responses. At least this one lacked the lying personal attackery that others tend to resort to, but it's still nowhere near the actual subject; it's a distraction.
Yes, a bunch of famous Republicans are against Trump. I've been pointing that out myself for years, including when other Democrats angrily denied it & claimed that saying so was somehow an attempt to help Trump too.

But the subject here is about winning & losing campaigns, and the fact that you just stated, while accurate, doesn't touch that subject. Trump's voters already know it and either don't care or even consider it a positive thing that even contributes to their motivation, not the opposite. And the issue wasn't even just the fact itself anyway; it was the
effect of making it a big point of emphasis in the Democrat's
campaign. None of the above changes the fact that "Look how Republican I can be & how much Republicans love me" is not a winning angle for Democrats.