Nothing to do with “migrants”?
For this particular issue...Covid brought in curfew situations, home-office work, home-school, and just a fear of getting Covid onboard buses and trains. They actually roped off buses where you couldn’t come within six feet of the driver.
They were running some bus routes where the load was 10-percent of what it’d normally be (especially in Dec 2020 to Feb 2021).
Remember as well...party districts shut down with the curfew business, and no one was hanging out after 9 PM.