I’m also aware they won’t make the direct references and I’m willing to bet the OP is too.
There are very few instances I can think of for the last 4 years where I heard anyone complaining like this about the general state of these things. There’s a few offenders I can think of, like Salesforce, but I haven’t heard from any non technical users especially about things like Gmail being slow or their browsers being too slow.
Whet I often hear instead to be honest is people widely seem surprised when they have 200 tabs open in Chrome and everything still feels fast to them
That’s not to say performance isn’t important, it really is, in fact I’m the performance czar where I work, I spend along time on optimizations and performance.
However the acceptable performance threshold is dependent on the activity more than anything I’ve found. That’s why it’s such a big deal in e-commerce but people don’t seem to care as much for longer lived apps, otherwise Jira might actually be snappy
Now of course there is a threshold regardless of app where it will things negatively, losing customers etc. and thus it shouldn’t be ignore either