With Cosby's testimony included he was convicted, it and the womens testimonies were found to be sufficient under law to demonstrate guilt beyond a reasonable doubt.
When the testimony was excluded on technical grounds the statements by Cosby weren't demonstrated to be false or questioned in any way, they were simply set aside, as true as they ever were.
Again, the general public is entitled to shun Cosby on the basis of the testimonies presented including his own words which haven't been discredited, just excluded.