Answer is a simple “yes”.
Feminism among humans is the result of retardation and low tech level combined with the universal principles of the past being very “liberal” to allow free development of black magic.
Lyran society is a result of having similar attitudes in a society with an endgame technology level and spiritual awareness. They don’t form any monogamous relations, but they do sometimes form 9-1 harems. It may sound like there’s some symbolism in that with cats having 9 lives and stuff, but it’s very shallow. They do refer to mythology like that, but it’s like an accessory, they don’t really place any importance on it, it’s just how their women decided that having more than 9 females on one male would result in too much quarrelling so they keep that as a standard.
Science at an advanced level will find that souls are real and that they reincarnate. This leads to technology which can control this process. In the end people stop caring about trying to do anything in life, because they’ll just reincarnate anyway and they know this. Lyrans have a very relaxed attitude for this reason and technological and societal development has reached a halt. They mostly just explore space to find new planets and species.
As for the “why not just extract semen” etc, what’s fun in that? They have no need for any reproductive aid, their genetics are already perfected by nanobots so childbirth is painless and safe, and there are no negative repercussions for having perfectly normal sex+pregnancy with anyone.
If you want a romantic relation with one that is possible, but they don’t have the idea of “true love” humans dream about. You both just install the romance module in your nanobot system and decide to have a romantic relation with your partner, the techology will produce feelings of romantic love which are mutual and last as long as you want.