Not as bloated as MSOffice. There's nothing wrong with using either of them, but these people expected miracles from moving out of a proprietary system to an open system without putting any effort whatsoever into it. I don't have a problem with using libreoffice in my work environment because I forced everyone else to use it exclusively. Works great. Any old excel file/programs were simply converted to work right in libreoffice (Yes, surprise, you actually have to do some work to migrate to a different system!). And I don't have anyone send me any MSOffice files.
Meanwhile, have you tried opening an old document file in MSOffice with a recent copy of MSOffice? Absolute disaster just the same. I've seen some places have Office 97 and Office 360 together because the old docs don't look right in the new Office or some functionality removed. If you don't have the time, money or effort to properly migrate, then yeah, you're going to have problems no matter what. A lot of these businesses could have easily just hired some college kid part time to help them migrate, but they don't want too. A lot of these places don't even have any plans on how to properly migrate in the first place. Not even any plans to make sure updating MSOffice doesn't screw up everything.