Cash grants for the airlines would be OK with me only if they were to be purposed for payroll and immediate needs like securing mothballing facilities.
I don't think that airlines can be trusted to purpose them for payroll or any specific urgent needs. For instance, how can you guarantee that airlines won't use these funds to take over a competitor, or to try to get ahead of competitors when things start going back to normal?
In addition, it's not realistic for airlines to maintain a full payroll or anything close to that, and it's impossible to quantify the needs of each airline.
For instance, I don't think that the goal is for the taxpayer to pay out so that airlines can keep paying senior captains 300K a year for doing nothing, so they can in turn pay off their million dollar mansion.
It makes more sense to let employees fall back on (new) government welfare plans where employees are paid enough to get by, nothing more, nothing less.
This will have to be applied to other industries anyway so why make an exception for airlines?
If you start granting cash to airlines, everyone else will ask for cash grants and soon you will have a huge mess.
We have to keep in perspective that this is temporary.