According to the Via Lusitana
website, there are still a few places that accept pilgrims. The introduction to the list of lodgings on the route from Lisbon makes clear that this is an unusual act of kindness and that pilgrims should not expect to stay with the bombeiros.
Alhabra and Azambuja are listed as two places where the bombeiros have stopped taking pilgrims. But these towns are listed as a possibility (with phone numbers and the recommendation that you call ahead).
Alviázere
Oliveira de Azeméis
Sao Joao Madeira
Lourosa
Porto
I do not know if this is still good information, because there is no indication whether covid has changed the situation.
Best advice seems to me to be to jot down their phone numbers and call a few days in advance if you are hoping to stay in the Bombeiros. They also note that a sleep mat will probably be essential.