This is not wrong, physical wealth was indeed destroyed to make tokens of negligible* value to humans, but the meaning of OP's "wealth" is claims on real goods or services -- as in the houses bought by insiders a few weeks ago. Destroying the remainder of such claims is a real benefit to the world economy, reducing inflation of all legit currencies.

*negligible not zero, because some tiny slice of crypto transactions actually are done by useful workers in order to shield wages from kleptocratic regimes.