MW1 ... I will give you a short grammar lesson. This should be of some help, and do not take it personally.
The word "therefore" is not a conjunction. It is a conjunctive adverb, so it cannot connect two clauses together. ...
Really, Dan, this sort of thing is
not what we expect on the forum. We do not analyse members' grammar.
Maybe you are trying to be helpful, but people could interpret this as being insulting ~ which is against the rules.