I disagree. I never assume anything, even with what is declared as fact ...
Statements of assumptions or implied assumptions can be ignored, right?
Most times I hear someone ask for back up info, I consider it just a form of laziness or a quick way to reduce the credibility of a post, without having any logical rebuke ...
Okay ... after coming up empty with google and review data points - what are your data points that make vehicles an issue?
My data points are that pre-covid:
1) work can't get enough people riding transit to get a company wide discount.
2) for my dept (about 20% of the staff), those using transit outnumber those who car pool by 3x.
3) those car pooling do so with those outside their home at a rate of 20% of the total that car pool.
Is it likely that those willing to car pool with strangers are going to increase during a pandemic?
Both categories during covid are likely irrelevant as we actively discouraged from going into the office where manager approval is required.
For my neighbours, far fewer are going into work. Of those who are, most are going in on their own, just like they did before and have said they are skipping requests to car pool. For those with more than one in the car, it's someone from the same house hold. Where one is already in the same household, some extra time is a car doesn't seem all that risky.
According to my friend who works at the LTC close by, car pooling has dropped.
Work is discouraging it as well.
There's also the delivery guys doing deliveries for ten hours.
Is a car pool for an hour going to add to the risk?
.... The main point is the person stating it already believes it, so the onus is really on the person questioning it to google away and find out what they can find...or just add it to the long list of unproven but still interesting theories, or disregard it.
I doubt either of our data points is going to prove much, other than make it clearer why there is a disagreement.
Anyway, nothing is certain ...
Yet somehow you are certain that asking for references is mostly laziness while asking for an explanation is not lazy while making no assumptions.
Cheers