Belarus is to socialism what puberty blockers are for trans people. Puberty blockers may not give you the body you want but it stops you from the body you don't want. Belarus' political system may not give you the socialist system you want but it stops capitalism from taking over control.
Why would he wait if it doesn't matter? Belarus already has to deal with sanctions and coup attempts. It wouldn't make a difference if he was socialist, so I think he isn't otherwise he would've shown it more already.