Templatable state_filter in entity-filter (or list of entities with templatable filter)

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Hi all,
anyone knows if it is possible to use a template in a state_filter attribute of an entity-filter card ?
What I’m trying to do is to only display rooms which dew point temperature is “near” outside temperature so to prevent molding.
I’ve thought of using an entity-filter card in wihich I’d put such an entity-filter but it seems that attribute isn’t templatable.
Thanks in advance

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Have you found a solution for this?

Supposedly https://github.com/gadgetchnnel/lovelace-card-templater will do it, but I can’t get it to do anything other than combine words, like the example does… kinda pointless.