This would use large amounts of trifluoroacetic acid which is a chemical of concern for many reasons.

Say more? Is trifluoroacetic acid useful for other things? Also does it come out as liquid or gas in these reactions?

I don't know much about organic chemistry but this approach seems like it produces byproducts of "value", as in commercial value. Even if they are dangerous like traditional byproducts, it seems like they can be used for other things instead of just a waste product sitting around?

Idk what is worse, that or benzene and dioxins

Had a high school science teacher who had a harrowing encounter with

https://en.wikipedia.org/wiki/Trichloroacetic_acid

and usually replacing the Cl -> F makes it worse. (Though there's that weird thing that HF hydrogen bonds itself so strongly that it's a weaker acid than HCl though it makes up for it in danger by being neurotoxic.)