Kiss of death
Nobody outside of a handful of "Trump or die!" FReepers gives a sh*t about Jeb Bush or who he endorses.
Seeing how Ron DeSantis is the only GOP candidate not named Donald Trump who has an actual shot at being the nominee, he's going to attract many endorsements from Republicans who loath Trump, including those like Paul Ryan that Trump himself previously endorsed.
As long as DeSantis keeps governing like a conservative, fighting and winning conservative battles, I don't really care who endorses him.