While I don't see a problem with going through the top, I can't really see a little screw hole hookin' you up.
I could be wrong, & personally I'd try to go with as little as possible
In theory, if you used the same amount of screws, going through the top would probably be stronger.
But who says you have to use the same amount of screws.
If you went through the bottom you could blast a million screws through it & it wouldn't matter.
Then the latter would be stronger. IMO.
If you go from the bottom pre drill the wood with holes bigger than the threads of the screw, so the screw loosely slides through the hole. You will get a better hold.
If whatever doesn't kill you, only makes you stronger.
Then I am so close to immortality