I hate to break it to you, but in threads with a poll associated with them, people often leave posts that indicate which option they picked. If you look at some of the other posts in this thread, this is exactly what people have been doing, and it's perfectly normal and accepted.
Here's some advice: Maybe instead of throwing shade at the preferences of a whole group of people that just happen to include the one person you wanted to sass, try to challenge their post productively by creating a healthy counterpoint and explaining why you believe Super Mario 64 is actually a good game and a good investment.
That would be much more helpful to the thread creator as well.
It would, but I wanted an excuse to link the image

I've nothing for nor against FE. It's probably every bit as "bad" as SM64, which isn't an insult in any way by my collectathon-adoring standards.
Anyways, I'd say get the DS game first (on 3DS) and then the original, as the remake is much easier thanks to Luigi. The original's practically challenge gaming in and of itself by comparison, even without any self-imposed silliness regarding numbers of button-presses.
Of course, I'm of the mind that if you prioritize speedrunning above completion amount, you're playing the game wrong, regardless of the game. But that's just my silly little opinion, and if you like speedrunning, then that's great.