Its his deplorable behavior to other people that rankles people.
If we as a community accept the whole doping era, and it seems we do when we look at, for example, Pantani, Ullrich, Veronique, the UCI (eulogised, face of Rapha, EuroSport commentry, still in charge), then Armstrong, simply because he did more effectively has to accepted as well.
However the personal tirades and destruction caused by his actions is another thing all together, and to most not forgivable.