If a website disrespects "request desktop site" and still tries to force you into an app... ugh.
Had this happen yesterday when someone sent me a link to something on AllTrails. If the service was good and the website was usable, I might have even considered getting the app for offline features. Not anymore - screw companies that do this.
Why though?
If only 1% of your user base is accessing your maps through the website, you aren’t going to keep supporting it.