I don't think I'd go as far as "copying" but Deno was the first to aggressively push for web standards in server-side runtimes and certainly helped accelerate getting them adopted in that environment.

I work at Cloudflare on Workers (but infrequently work on our runtime) and I've always been pretty impressed with Deno. Their recent-ish support for built-in OpenTelemetry is something we've been wanting to do for a while and have been working on, but Deno was able to build a good implementation of that in that time.

Cloudflare Workers was actually pushing for web standards on the server side several months before Deno was announced. :)

Though Ryan of course had a lot more clout from day 1 than I did.