> What I’m saying is that only relying on user interviews without supplementing them
I also took your "spend the weeks to months of expensive and time consuming work [...] Or you can look at the analytics" as a "either this or that proposition", where if we're making that choice, I'd go with qualitative data rather than quantitative, regardless of time taken. But probably it comes down to what tradeoffs we're willing to accept.
I think the root of the complaints here is prioritization. The things they care about are prioritized. Qualitative feedback is likely already telling PMs that something is wrong and really should be fixed, but other feedback has more data supporting it.