Lyft might not be a company much longer anyway, especially if states start considering the drivers employees rather than independent contractors (as has been judged by some courts in California already). Lyft has been operating at a loss for some time.
The concentration has always been on passenger safety - if passengers do not feel safe, you have no business - but with the increase of attacks on drivers (drivers of all kinds - here in Michigan it has been assaults on EMTs) - it is getting harder for companies to entice workers into driving for them.
Especially as independent contractors with no benefits.