Yeh, I get that because I am a Blitz3D user. The thing is there are millions of C/C++, etc programmers who are clueless about game design/logic - ie they are tuned into making apps/serious software. You've been working on game design for 10 years and will know so much more than many of them who have never been interested in making a game.
In the world of coding, it is not what language you use, it is what you produce that matters. There are a couple of Blitz3D games being sold on Steam.
I'll say nothing about Leadwerks Engine as, in truth, I don't really use it - I bought it out of respect. However, there are certainly a lot of BlitzBasic users on this forum - so you should find a lot of people that have no issues with a VB programmer.