Rabbi Lipman is a frum Jew. He has disagreements with other frum Jews on a number of issues, especially the assault and insult of frum 8 year old girls trying to get in to their frum school in their own neighborhood by vile people who identify themselves with what I think you are calling the “Torah community”.
He got smicha from R’Yaakov Weinberg zt’l. He went to Ner. He was one of the founders of the kollel in Cincinnati. His writings are published by Feldheim and Targum, his divrei Torah and insights have been used by both the OU and Aish. He spent 6 further years in chinuch before making aliyah. He teaches in a seminary that I am familiar with that has brought more young women closer to frumkeit than your unwarranted exclusivism ever will.
Is he a perfect individual? Undoubtedly he is not. But maybe some of his criticism – or most of it – is well founded. Evidently musmachei Ner Yisroel and marbitzei Torah don’t meet you sniff test.