Oh and the 'elders card'. Again googling "MRT' Elders card.
Yes, it's true that foreign seniors (and other foreign travelers) are no longer eligible for discounted MRT fares in Bangkok. The MRT has discontinued the elder card and other discount cards for non-Thai citizens. This means that seniors, students, and children are no longer entitled to discounts. The MRT now requires all passengers to pay the full fare, regardless of age or nationality.