Dear Shri Nara,
I see that we tend to look in the same way on this topic. I also agree that the musical compositions of Thyagaraja are non pareil and I adore many of them. But then that does not make me think that Thyagaraja, the person should also be venerated and eulogized without any other regard. (We have a Malayalam lyricist Vayalar Rama Varma who dies few years ago. He was a composer who has made some very great and endearing movie songs. But as a person he is almost always looked at as having been an alcoholic, one who neglected his family utterly, etc. In Kerala, people are able to perceive this difference. Since I have grown up in such a milieu, I think that it is quite OK to honestly write about the shortcomings of Thyagaraja, the man while, at the same time keeping my respects for his musical compositions.)
Again, even these people who adulate Thyagaraja so much, will not, I think dare to pronounce that Muthuswamy Dikshitar or Syama Sastri were composers of a lesser calibre! Hence, it is like our religion in which each deity is praised sky-high and as the Parabrahmam itself.
What I tried (and may still try to do) was to analyze the Man, Thyagaraja and some of his obvious failings or deficiencies. People who talk very well about women's equality etc., seem to completely forget what would have been the tragic life of the wifes of Thyagaraja, especially when we remember that the first wife died childless after 5 years of marriage and the second (sister of the first wife) had one son who died childless.
I again say, let us "Render unto Caesar the things that are Caesar's, and unto God the things that are God's".