My basis? Quite obvious: if you are okay with inflation, this means that people who saves money end up worst off by subsidizing people who consume. This impacts society a lot, and especially, the poorest people without means that justify investing in the market (be it buying shares in companies, buying gold, or just having something in the bank better than a horrible savings account).

I didn't ask what your basis was for opposing inflation. I asked what your basis was for saying that monetary inflation was the "real" inflation, as opposed to price inflation. You didn't answer that. Instead, you gave an answer that says that inflation is bad, which I agree with. But the negative effects you describe are at least as much the symptoms of price inflation as they are of monetary inflation.

I've given you a couple of chances to make a case that monetary inflation is the one that matters, and you have provided exactly zero (other than the bare claim that it was so). So I'm going to stick with my position, which is that your claim is wrong.