First, I'd be careful about using Google results to make generalizations about English. Google results will include pages like blogs (where amateur writers often don't even proofread their own work) and song lyrics (which don't always follow the rules of grammar).
It's better to do the search on Google books, which will return results from published works.
You can find several instances of "more than what" on Google books, but the usages are much like these:
History is more than what happened in the past.
What you gain is worth more than what you lose.
People can feel guilty when they receive more than what they consider they deserve.
You may want to start a negotiation by asking for more than what you think is fair.
In short, I wouldn't insert a what where it wasn't needed. In the "more than what" construct, what is actually a word that is tied to what follows. Let me write those four sentences again, only this time, I'll denote what the "more than" refers to in parentheses:
History is more than (what happened in the past).
(What you gain) is worth more than (what you lose).
People can feel guilty when they receive more than (what they consider they deserve).
You may want to start a negotiation by asking for more than (what you think is fair).
It's worth mentioning that none of those sentences would sound sensible if the word what was removed.
So, you might say:
I love English more than what other people are saying.
but, if you are simply comparing your ardor with the enthusiasm of others, you should say:
I love English more than others do.