Modern browsers support brotli or zstd, which is a lot better in terms of compression. Perhaps not as good for on-the-fly compression, but static assets can get a nice compression benefit out of it.

With toxic AI scrapers like Perplexity moving more and more to headless web browsers to bypass bot blocks, I think a brotli bomb (100GB of \0 can be compressed to about 78KiB with Brotli) would be quite effective.