He has both good and bad points. He is correct in that Tcl's niche is too narrow to serve as a universal scripting language (though that, as John Ousterhout po

He has both good and bad points. He is correct in that Tcl's niche is too narrow to serve as a universal scripting language (though that, as John Ousterhout pointed out, wasn't really Tcl's goal to begin with). But he was also mistaken (I think) in thinking that a universal scripting language would be both possible and a good idea. In practice, needs and preferences are too diverse for one scripting language to serve them all equally well; also, language competition is a good idea. The biggest problem that people had with Stallman's argument, I think, was that he was pushing the immature GEL/Guile as a replacement (and it would remain immature for years to come), while Tcl at the very least did its job well.