Ten year age gaps aren't necessarily problematic, when both parties are FULL GROWN adults. An 18 year old is nowhere near the same level of maturity or even the same stage of life as a 30 year old. In fact, just because an 18 year old is *legally* considered an adult under the law, it doesn't mean they are any more mature than a 17 year old, they are both teenagers. If you ask any sound-minded reasonable adult whether they consider even a 19 year old to be teenager, they will agree.
Also, Oskii was simply just offering their input into a public conversation happening in a comment section where anyone can join in. When talking in public spaces on the internet, don't expect people to butt out of conversations that they find interesting or concerning. (Also pls dont read this in a patronising tone, I apologise if it comes off that way)

I would NEVER date an 18 yr old if I were 30, and I wouldn't date a 30 yr old if I were 18