Every professional athlete uses PEDs already and they do so discretely. Let's dispell with the nonsense that they don't.
Take the 23 Chinese swimmers who all got caught and WADA hand waived it by saying it was doped meat. Are you kidding me?
Common complaints about PED use range from inaccurate to outright lies. Steroids can be used at appreciable levels 200-500mg when blood tests are done regularly. Damage to the cardio system only occurs when you don't do cardio and let your hematocrit get too high.
Pro athletes who do PEDs will have access to the best doctors and medical care money can buy. They are prized stallions and will be well taken care of.
So that leaves us with the final one which is, "it will encourage normies to do PEDs for the gainz!"
Trust me, every fitness magazine does that already.
The sooner the WADA, USADA , and IOC get a kick to the face when the attention to them disappears is when this pearl clutching finally ends.
Sports are entertainment, people want to be entertained, and advertisers want eyeballs. If it falls outside of that scope then it's a waste of time.