Well, Mercedes is already called the Mercedes AMG Petronas F1 team.. and has that name all over their rear wing, amongst others. Petronas is a fossil fuel company of course, pretty unavoidable in F1 perhaps, and the presence of a fossil fuel company as such should not be the biggest issue in itself. After all, persons should be able to advocate their beliefs while still participating in the world we live in, and participating in the world we live in sometimes means making use of technology you may be opposed to. You can object to fossil fuels and advocate for, say, biofuels or hydrogen cars in the long run, while still driving fossil fuel racecars (in lieu of alternatives) for now. Still, when it comes to fossil companies, Petronas is not exactly a leader in human rights issues, and they don't seem to be as outspoken on sustainability as some other oil companies are these days. Considering Lewis does not seem to have a significant problem there, I do not expect him to specifically object to INEOS either.