Yet again, I'll quote the basic source for the modern view on this:Oxford Words defines "elitism" as: "the advocacy or existence of an elite as a dominating element in a system or society." Elitism also means, "the attitude or behavior of a person or group who regard themselves as an elite." A graph showing amount of usage has the term entering English around 1950, reaching a peak near 2000, and staying near there since.
I'm seriously concerned about the use of the word now in respect to classical music. It seems to me that a good place to start is understanding what we mean, and what others mean, by "elitism" and "elitist." The above definitions apply in the plural and the singular. Perhaps classical music is a system in the sense of its interlocking institutions, personnel, music, literature, and so on. Concerning groups or individuals, while attitudes are important I think what we say on TalkClassical counts as behavior.
In any case, what do you mean by "elitism" and "elitist" as used in 2021?
Thus, though the principles of taste be universal, and, nearly, if not entirely the same in all men; yet few are qualified to give judgment on any work of art, or establish their own sentiment as the standard of beauty. The organs of internal sensation are seldom so perfect as to allow the general principles their full play, and produce a feeling correspondent to those principles. They either labour under some defect, or are vitiated by some disorder; and by that means, excite a sentiment, which may be pronounced erroneous. When the critic has no delicacy, he judges without any distinction, and is only affected by the grosser and more palpable qualities of the object: The finer touches pass unnoticed and disregarded. Where he is not aided by practice, his verdict is attended with confusion and hesitation. Where no comparison has been employed, the most frivolous beauties, such as rather merit the name of defects., are the object of his admiration. Where he lies under the influence of prejudice, all his natural sentiments are perverted. Where good sense is wanting, he is not qualified to discern the beauties of design and reasoning, which are the highest and most excellent. Under some or other of these imperfections, the generality of men labour; and hence a true judge in the finer arts is observed, even during the most polished ages, to be so rare a character; Strong sense, united to delicate sentiment, improved by practice, perfected by comparison, and cleared of all prejudice, can alone entitle critics to this valuable character; and the joint verdict of such, wherever they are to be found, is the true standard of taste and beauty.