Starting from this May 2025 Thailand intends to reintroduce requirements to show financial proof for tourist visa applicants. However, 93 countries including Denmark can still enter Thailand visa-free up to 60 days, although the visa-free period may be reduced to 30 days in 2025 as earlier announced in the media.
Danish tourists are not comprised by the new rules (not being a tourist visa holder). However, if you are for some reason holding a Tourist Visa for Thailand, the link below contains an guide to the new rules.