Aren't you agreeing with me? The important thing is that, as a fraction of users, the number of people asking for this is small. Therefore, given the size of the company, the resources devoted to it are relatively small.
No. I think when you are big enough, a feature with even 1% usage is big enough to dedicate resources to. Slack made $168M last quarter. 1% of that deserves at least 1 eng and 1 QA full time.
Where do you think we disagree? I am arguing that bug-fixing costs are not a good justification for Slack to ignore requests for the desktop website from mobile devices.