Heathrow Harry,
I hear you, and quite understand the need for regular security updates. No problem with that. Even the crapware I can tolerate albeit having to take the time and effort to delete the junk. (I only have a 64 Gb ssd drive, so not much space..).
What I don't get is why I'm being pushed for another update only a month after the last disastrous update that nearly ruined my laptop. To be honest, I'm fearful the same thing might happen again, there's no guarantee it won't. Maybe it's a Lenovo thing, I don't know...