Wrong.
Windows 7 is a current, supported product. Using it is fine. Windows 10 has automatic updating - which by default reboots when it likes and takes you work with it (unless, probably, you use Microsoft Cloudy Office 355 - so, not a flaw, a sales opportunity) - but an enterprise will take control of updating the endpoints anyway. Look at how many Star Trek episodes have the Enterprise's computer taken over by an alien force, or just becoming delusional on its own. (Both Kirk and Picard had to deal with each of these things happening, a lot.) Learn from this and install legitimate updates in phases - make proper use of your phaser.