honestly at this point i question whether obfuscation even matters. I run a few sites with plain mailto links, spam volume is maybe 3-5/day and the provider catches all of it.

the actual vector that causes problems isnt harvesting from your website - its your address showing up in a breached database or a client's compromised outlook leaking your whole contact list. had that happen twice last year, no amount of CSS tricks on the website would have helped

if you need a contact form anyway for UX reasons just use one, it solves the obfuscation thing as a side effect

Did it ever matter? My gmail address had been in the open for 22 years. I have more problems with people sharing the same first name and using my email for registrations than the spam.