Not necessarily, what we need to be on the lookout for is lots of attempts early in the cycle (when you are not fertile) because those essentially "go to waste" - the sperm die off immediately and then his swimmers may not be able to recover (while eod is enough for some guys, every 2-4 days is better for sperm count, and daily really does drop production by quite a lot).

The other risk with every day attempts is that he may not be able to perform in the fertile window. Most people disregard this but it happens ALLLLL the time even with couples who regularly BD a lot. So if you BD too much early on (or even just prior to fertile window opening) and then he can only BD once in the fertile window - or not even that!! it has happened - you end up shooting yourself in the foot with only one attempt or not really even one. More than one person has ended up with an attempt on O-2/3 and then hubby could not BD any of the other days, or if he could BD, he couldn't "complete the transaction". Most people would really, really not want to be in with one attempt on O-2 or 3, since not only is that the dreaded one attempt but also Shettles pink timing.