He'll probably pop up in sportives "winning" them and getting a few bob, which he will have cheated some honest guy out of. It's getting tougher though, the new WADA code is 4 years out first time, and for a lot of people that will be end of career. Good thing, as is being on a testing pool where you can be tested out of competition at any time*
* Despite all the whinges from people in other sports about interference with their "rights", they are professional well paid sports people and testing goes with the job. Besides, the systems asks you for a location for one hour per day, and you can alter the location any time by texting the anti-doping number that is part of the information. Or at least that's how it worked when I last looked.
Anyway no-one should be sad to see the back of convicted three time losers.
Should we be so harsh? Yes because anyone who has lost any event to a cheat has been, well, cheated, and possibly had their career prospects and/or financial situation affected.