Like
@Tod ********
said, they all want 3 months bank statements (to see income) but they don't all interpret that as requiring 500k for the 3 months. London for example very explicitly says they want 3 months statements but the 500k only needs be there for 10 days.
By your logic, as (2) says OR sponsorship letter(s), every consulate will now accept a parent's letter in place of having any money in your account at all. This actually did happen early on as it is a legal option written into the establishment of the visa. But we know most consulates won't accept sponsorship letters anymore, showing that this e-visa UI text isn't a sudden, blanket policy change across every embassy.
You're cherry picking from this the bits you like to satisfy some weird Captain Thailand gatekeeping.