He is noted for being an anti Trump Conservative.
Back on April 12, 2018, he warned that bombing Syria without Congressional Authorization would be imprudent and unconstitutional. Then President Trump ordered bombing of Syria the next day and the bombing was
carried out on April 14, 2018. This was after a Syrian chemical bomb attack on civilians.
In 2021, he praised President Biden for bombing Syria despite their being no Congressional Authorization.
Personally, I think there is a good case to be made that the 2018 bombing was unconstitutional but similar actions have been carried out by a number of Presidents over the past 50 years, so even if unconstitutional, it is more or less SOP.
More to the point, is French being hypocritical? French's only defense here is that he is OK with unconstitutional bombing as long as it is 'prudent' and in that case it deserves 'praise'. That defense is so implausible that I discount it and judge him a hypocrite.
Similar 'Trump bombing was wrong but Biden's is fine' has been made by other people. My favorite of this genre was by Amy Siskind (a former Wall Street finance type, now a leftist writer) who said that since Biden didn't issue a mean tweet to go with the bombing, it was OK (I can't link to it since she removed the tweet after it was ridiculed - image is from a screen shot by, SirajAHashm, a critic of Siskind).
French's 2018 tweet is here.
French's 2021 tweet is here.
Hashm's tweet with Siskind's tweet captured is here.