I was pretty clear that of course these people exist. What I qualified this with is that the people who oppose him this time all voted last time, but that more people who opposed him last time support him this time than vice versa. Of course there are prominent exceptions. However, it's important to look at trends. Trump won last time with limited support from the Republican party. A good measure for enthusiasm can be looking at the voter turnout in the primaries for an incumbent president. In 2012, President Obama garnered 6,158,064 votes (https://en.wikipedia.org/wiki/2012_Democratic_Party_presidential_primaries). The previous record for turnout for an incumbent was President Clinton in 1996 with 9,706,802 votes (https://en.wikipedia.org/wiki/1996_Democratic_Party_presidential_primaries). This year President Trump secured 18,159,752 votes (https://en.wikipedia.org/wiki/Results_of_the_2020_Republican_Party_presidential_primaries). He wouldn't be doubling Clinton's record if the Lincoln Project (who didn't vote for him the first time) was representative.It's funny, when you're talking about how there are few Republicans who don't support this time around, that the Lincoln Project and the 780 retired generals and security leaders who are opposed to him. But I guess they don't count.
Also, I'd like to see a citation on the "Trump won because voting was down" claim, because I have literally never heard that. I have heard that lots of Hillary voters stayed home because they knew she was going to win, but that's hardly the same thing.