Thanks for the info! I probably should have done some more research myself...what you said about security not being 'black and white' is something I forgot to pay more attention to while writing the blog post.
I've updated the blog post with an alert about this accordingly.
For an up-to-date performance comparison of the latest ugrep, please see the ugrep performance benchmarks [at https://github.com/Genivia/ugrep-benchmarks]. Ugrep is faster than GNU grep, Silver Searcher, ack, sift. Ugrep's speed beats ripgrep in most benchmarks.