I think this objection, though I empathize with your bringing it up, is not really worth our time in considering.

Look, we all know, if we are honest, that there is a kind of skepticism (the result of realizing the problem of solipsism and following through on its logical consequences) that cannot be eliminated from the system. It is universal and infects everything.

For this reason, we really need to know more about why these folks have objections to these conclusions. Why we should give particular credence to the opinions of members of the philosophical professions is not obvious, as certainly this site testifies to the fact that you need not be a professor of philosophy to investigate philosophical questions. I suspect, but let us test, that in a fair number of cases the kind of doubts that are raised can be raised in any and every case of a claim of truth. If this is the case, then what matters it? I do not think our interests, practical as they seem largely to be, require that we be constantly limited by such doubts.

I am sure this reveals me as a scientist, but cannot we agree that in the cases of such doubt we should just move on and get on? We should, I think, care about doubts specific to the problems we are considering rather than doubts general to all problems, or we can be pretty sure that we are not going to get anywhere on any topic ever.