completelly wrong
openoffice is now property of a company, it is theoretically free but this is not completely true
all the developers of openoffice decided to move and abandon openoffice and created libreoffice
the decision of abandon openoffice was done by many distros if not all because oracle is not friend of open source software right now and doesn't play nice with others, this began almost a year ago when other free projects of sun now property of oracle had drastic changes discouraging people to keep working on them
it is very rude that you say that it is microsoft style when this movement is done to not fall in their practices, if you had doubts you could ask in this forum before trying libreoffice manager
openoffice wasn't removed on my machine when i installed libreoffice, don't know what you did there