The charge is true. FWIW.
HP bought out Compaq (and Digital Equip Corp with it) then proceeded to kill the best hardware platform because it was better than theirs and then killed off OSF/1 because it was better than HP-SUX.
They are scum sucking bastards.
HP eventually bought Tandem Computers and the robust operating system — OpenVMS (which used to be the flagship of the now defunct, DEC ).
What has happened to these once fine products, I have no clue...