I don't think the FSF foundation has been an effectibe organization for a long time, but giving money to the Linix Foundation is even worse. Look at where their money actually goes - a vanishingly small portion is actually used to improve Linux and its ecosystem.
The topic on whether FSF is an effective organization is too big to fit on a comment, but I'll just add my two cents on how the FSF helped me this week:
I was looking into shared key encryption, found Shamir's Secret Sharing algorithm, found a GNU implementation called ssss.
Thank GNU
related Shamir tools: https://bs.parity.io/ -- http://passguardian.com/ -- https://iancoleman.io/shamir/