In a situation where countries all over the world are reporting record-breaking numbers of new Covid19 cases, maybe travelling all around the world for these kind of national games is probably not the best thing to do ... I am sure Salah won't be the only one coming home with an infection. These national games are the perfect spot to spread the virus. Players from many different teams, from different countries come together, some probably from places that don't have these strict hygiene rules. No wonder that you have a high risk of getting the virus there.
But it is a compulsory match to play in this national event. Many are also worried about this, therefore the spread will continue to widen seeing so many cases in various regions especially in the simultaneous qualification that the possibility of the league players will return for those who are called by the national team. but I hope that in this situation they apply it so strictly that when they return to the league nobody gets infected under any circumstances.
Life must go on
If we remain doing nothing like to ban every single international matches until everything fully recovered back to normal which it has no specific time when this mad covid will stop hitting our world , the matches will stopped forever.
All of those policies to let all the international matches to run i believe it is the best choice , those stakeholders taking that decisions with reasons.
It is normal to be angry to see your key player like salah tested positive for covid19 because of the international travel and have to missed important matches in the premier league , it happens to everybody.
This is a wild world now.