I find it amusing that you suggest the complaint of "everyone will have the same stats", and in the exact same post, completely seriously and unironically, say that "Point buy makes the most sense" - Point buy, which is the number one root source of characters always having the same stats.

You're free to use pb if you like that. It's boring, restrictive and uninteresting, but by all means use it if you want to. Fortunately, it's already been confirmed that we'll be able to roll, and that there will be that and other ways to generate the actual full spread of ability score possibilities in some way - something which point buy does not, just as a point of order, allow you to do.

Solasta's system is pretty neat, in that it lets you use point buy, but it also lets you roll and does the generation quickly and smoothly, and as well as that, lets you manually input your scores - if you prefer to roll physical dice, or if you're recreating an actual tabletop character. Choice is good.

It should be a given that in multiplayer, the host would be able to set what method the table as a whole, together, uses for generating ability scores; it would be very silly if they didn't.