Unless they make a special edition with big thumbs to throw likes on facebook and copy and paste weekly updated compliments, I dont see them to replace men.
Now when it comes of women given that 50% of them are good for nothing than friction in that case yes.
In my opinion those sex bots would allow many men to remove themselves from the dating market, as Deesade said above the guy who cant have any decent girl would simply move to the bot and probably gain something from the chance.
The problem is that if you are fine with videogames and your sex bot, you will hardly get a degree work a demanding job and pay taxes, you will probably do the least possible to support yourself and society is gonna feel it.
Remember that its not the nba sniper or the famous actor to build your houses, fix your phones, deliver your package, and so on....those guys are the ones that get the raw deal with women and are the more likely to withdraw themselves.
Personally I dont see myself capable of replacing a woman with a bot but its probably because of me being born in the 80s, a guy born in 2020 will be mentally open to that.