Go for it!

I was a meat eater and I am now a vegetarian. I do not force my views on anyone, I have been on both sides of the fence.
You have experienced some judgemental vegetarians and I am sorry you have experienced this but likewise, I also have met judgemental meat eaters. I think it is best we just respect each other!
As for your blog and lab grown meat, I think this is fantastic albeit, from my memory, the blood in a steak is what gave it such a great flavour, without blood (which comes from life) I am not sure it would taste the same.
Having said that, if it can be produced economical, it could perhaps be a filler for beef burgers etc and in doing so it could reduce the slaughter and methane gas produced by live stock which is apparently much worse to our climate change than carbon dioxide.
As a vegetarian, would I eat it? no... I do not miss meat eating. I have much better health since I changed my diet and I will not go back.
Speaking of health, vitamin D deficiency is a huge problem in the world today. Here is my experience which I am sure may people are in the same situation I was in