Exactly! It is sad but true.
However if you know where to look, you can find pure Colombian boas without too much effort.
A fairly well known locale would be the Barranquilla locality boas.
Brian Boas has a pair that I imagine he'll breed down the road.
Anybody that has stock originating from Rio Bravo Reptiles (Gus Rentfro) will likely have the Barranquilla locale if they wanted a Colombian boa. I have a male from this locale.
I'm fairly certain Vin Russo has knowledge of the pure specimens here.
Tommy Carpenter at TC Reptile has multiple locality projects including Barranquilla's.
This is the reason why some people are not fans of tampering with pure locality stock.
It can end about any locality if people don't take an interest in keeping the lines pure.
When importing certain animals is no longer legal, what is here is what we are left with.
The term "common boa" used to be the descriptor line for Colombian boas. I'd say now "common" can be used the say as "mix of I have no idea".