It is a DnD Game and more over it is a PC game, meaning a PC game give us not as much leeway as a DM might do. I personally hate point buy, it is gut-wrenching for me. I used a lot of the standard array on my games. But if someone wants to roll, buy or use standard should be a choice for the player.
It matter not to you, or to anyone else if there is an option to roll, buy or use standard. Use what you prefer, if people prefer to get more powerful stats by rolling and they feel good with it, you should let them.
