Why are you vacuuming up data if you don't even know what sort of outcomes you want to look for? How do you know you are even pulling from the right sources?
When you do finally figure out why you are in business, you may find that all the data you gathered is worthless. Sometimes it's really innocuous stuff like storing datetime values without enough resolution or accuracy. Only when you know how you plan to use the data can you ensure you are gathering it properly.
Teaching developers to collect all the data they can in hopes of being able to write arbitrary reports down the line is reckless behavior. Hyperscalers love pushing this ideology with inane bullshit like "Datalakes", so you can see where a conflict of interest may arise in the industry.