This whole imagined dichotomy of the male gender is annoying, so let me be clear: there is no such thing as a "Nice Guy" or "Bad Boy", "Alpha" or "Beta", etc. Reality is not black and white, most especially with people. I have seen men who are bike gang members with tattoos and wear leather jackets with demonic symbols, but are the most gentle, kind individuals ever, while I have seen men who are tree hugging hippies, but also beat their women.
On the issue of "Nice Guy" vs. "Bad Boy", I frequently find that the Nice Guys view women as fragile individuals that need constant help. Not only is this demeaning for the woman, it also causes Nice Guys to be more controlling and to be more outraged when a girl refuses his version of happiness. "Bad Boys", on the other hand, are basically "fuckboys": they abuse their women's misplaced love by causing emotional, physical, and often financial harm.
We know, however, that the majority of men do not fall into these categories. To insinuate that men fall into only either category is to deny that men can be more than one of two things, which is ridiculous.
"Alpha" vs. "Beta" is similarly ridiculous. The notion that there are only those who follow and those who lead fails to grasp the innate complexity of the human person as well as the complexity of society. Many men lead happy lives leading in instances where they are proficient in their understanding of whatever obstacle lies in the way, but also deferring to others when they come upon a problem that they cannot find the solution for.
In conclusion, men should not be typecasted as one of two possibilities when reality tells us that each man is unique unto himself. Really, all people should be offered this opportunity.