You see, but the alpha path is only slow when it comes to Sunny and Tracy. If we're basing this solely on the alpha path content involving Sunny and Tracy, you are absolutely right. It's a slow game. However, if we're looking at the overall number of sex scenes involving all the female characters in the alpha path, then there's actually quite a bit of content.
When thinking about it, there's actually a trade off. For example, in the alpha path there are like 4-5 scenes with Karla (including HJ, BJ, and full sex). In the beta path, there is 1 voyeur BJ scene with Karla. In the alpha path, there are 4-5 sex scenes with Maude. In the beta path, there is 1 video of Marcus fucking Maude.
It's when dealing with his family that there is little to no content in the alpha path. In the alpha path, there is a couple HJ scenes (1 dream, 1 with MC sleeping) with Tracy. In the beta path, there are 2 scenes, (1 flashback, 1 dream). It's with Sunny that there is the biggest discrepancy. There is 0 content in the alpha path with Sunny. But in the beta path, she's kind of the star of the show. She has like 6 scenes with Marcus.
I haven't gone back through the game and counted the scenes. This is just off the top of my head, but I think the number of sex scenes in each path is close to equal. I think the main issue people refer to has to do with Sunny. I think it's the fact that Sunny has 0 content in the alpha path that people think the alpha path gets nothing compared to the beta path. Overall, I think the issue really stems not so much from the actual amount of content, but from the focus of the content not being to people's liking.