I’ll make your life even easier. Or difficult if you aren’t a content creator but more techincally oriented 
Meta-felds are needed to create snippets for search results. But those are quite unrelevant for search result ranking. It is really nice move to make first two sentences such way it gives an idea for human reader what one can expect — but again, it has nothing to do with with search results. Well, it may have if a description — here the very first sentence — makes clicking that result easier for human.
SEO value comes fron content as whole.
I’m meaning that all that time you have browsed thru raw html and meta settings didn’t help get better SEO. But if you would spend that same time to create useful content… well, that is the real play field
Forums are good example of that. First post of a topic has very little value, other than it can be same as someone will search. The real value comes from topic itself and there is no meta-fields — and still Google values those quite high.
SEO business is… something.