I am not a great believer in conspiracy theories because conspiracies are very difficult to maintain. If two or three people know about what you are up to, you have a chance of keeping a lid on it, if the number rises to 20 or 30, your conspiracy will eventually be outed.
This is why Newco staff and players attending a party on Saturday night were exposed and why other partygoers from the same club were caught earlier in the season. It is also why Newco were caught in July, when they played a friendly against Dundee United despite their test results (all negative) not being available until after the game.
Football is afforded discretionary status to continue to operate without normal social distancing requirements on condition rigorous testing is maintained. This has had consequences for Celtic, who lost a significant portion of their squads in October and January when players had been in the vicinity of positive team-mates (international and domestic).
So if Newco have a lax attitude to testing, can we extrapolate that they would subvert competitions by pretending that in October a positive player who had contact with dozens of other Newco players did not happen? Throughout their 8 year history, they have always respected the rules and spirit of the game, so it is unlikely.
If they did, the facts will out when players move on. Several are already out on loan, more will leave soon.