I do not know about inevitability, but this has been discussed before in this forum. See
this.
Well, in fact SS is already a form of welfare. To see for yourself, go to SS web site and try out the SS calculator. A person who makes $100K/year contributes 2X the amount from someone that makes $50K/year, and 4X the amount from someone that makes $25K. Yet, the pay-out is not at all proportional to the pay-in. Other individual retirement plans such as 401K and IRA, etc..., all pay out proportionally to what one paid in.
I myself do not mind this, as
SS is a social program to help the workers at the bottom rung.
But now, they are going to say that two persons who both made the same, say $50K/year in the working years, and paid the same into the system, now the one that was LBYM has to subsidize the spender, because the former has more "means" while the latter has more "needs".
Heck, that would quickly cause the country to turn into profligate spenders, so that they would all have more "needs" and less "means". Just another example of how I find it difficult to think highly of any politician.