What are you calling "good mp games"?
Edit: the 2 next paragraph are garbage, at least as far as 
and 
are concerned, I was wrong.
Deity PBEM that strive to emulate single player minus cheesing the AI is a completely different, not comparable beast to fast games played in one seat. If there are only humans, difficulty level is really a matter of preference, not skills. If there are AIs, well, not everybody can cope with emperor. Arguably no beginner can even cope with monarch.
I personally prefer
and
rest limitations of higher difficulty levels, but I don't think improving equates being able to win against arbitrary levels of difficulty, that happen to require more
and
management, among other things.
This guide is obviously not a beginner guide -at least not in the sense of a guide for beginner- and I don't read it as it pretends to be. It seems destined to players new to fast multiplayer games, not necessarilly new to the game in general.
But yeah, if OP did not get it already, it's a bad guide for single player. Also, fast mp is bad for beginners. While single player does teach you bad habit for multiplayer (eg leaving cities unprotected), playing slow (possible on SP) allows you to gain skills universally applicable. If it's the same as other games (eg chess), I'd say baring skills specific to it, fast multiplayer (or fast, short turn timer, in general) is more about checking skills you already have than about building new ones.
As far as a is it a good guide for fast MP, most of the points made look dubious, but understandable. They're not attacko level of nonsensical, so not knowing fast MP, I can't confidently say they're garbage.
Some points are less dependant on the settings, but they're not all bad, like the obvious creative sparing the need of a monument to build a city in optimal placement.
Some are really bad on many points though like:
"Since you will often be making your workers with food overflow this isn´t too imbalanced"
