Rumors. No, you don't need a series 65 to give retirement advice, nor do you need one to be a fiduciary to sell fixed indexed annuities for qualified plans. You WOULD need a Series 65 and RIA affiliation (or Series 6/7/63 with broker/dealer affiliation) to give advice regarding SECURITIES - namely buying, selling, holding, or any analysis of securities portfolios.
Lots of gimmicks trying to recruit agents to join RIAs and sell managed money.
And until the DOL ruling is actually in EFFECT, it doesn't matter yet.
Don't forget what getting a series 65 and the requirements all entail too:
Earning and Validating Financial Planning And/or AUM Fees