They don’t seem at all sloppy to me. Sloppy to me would mean poorly researched assertions leading to the likelihood of incorrect data. This just seems like a minimal job, not a sloppy one. But I would note that they used to mark such short entries as stubs.
Wikipedia is sloppy because there are persons who battle to deliberately introduce false/disproven information into articles even about entertainment history.
I’m even aware of persons who’ve had articles written about them going through hassles to get false stories/details removed (things may be taken out only to be re-inserted days/weeks later).
Some of the authors have NO interest in truth or accuracy.