I still have a checkbook for the occasional handy man that doesn't want cash or transfer. I'm pretty sure most apps take a cut from business accounts, and others will report to the IRS when you make a certain amount, so for some workers it makes sense to avoid the apps.
Zelle is somehow the one that is usually free and does not report, but my credit union has a daily limit for Zelle transfers, so if the bill is larger, I offer payment in check as an alternative to cash since it's safer.