Trying to cover 2 points here, in one post.
First, the above, My issue, with any Party, how are these non-elected, not civil servants answerable to the Public, Cummings may or may not have an influence on the PM, but who decides and who has the final say on what he is privy to or can influence?
On the Judiciary (quite ignorant on it) if they don’t or shouldn’t get involved (which from what you’ve posted, makes sense) are we in danger of a PM or Party doing what they want, when they want, regardless of Party.
ie, if Boris had won what was to stop him proroguing Parliament again for some spurious reason to simply run the clock down, surely there has to be again some accountability for any Party or PM
On the issue of unelected Civil Sevants advising ministers, its gone on since long before you or I were a glint in someone's eye. If you think about it, a Civil Servant may have worked in, pick a dept, for donkey's years. Do you want a Cabinet Minister who's been in office for 5 mins making a decision or do you want him being advised by an expert? Ask Pieman for a better answer on that one.
On a party being able to make dodgy decisions, Grant85 asked the same question. He's right, as you are. I think its a loophole that needs closing. Johnson isn't the first to do it that I can remember. John Major prorogued to stop the cash for questions debate embarrassing his govt. It needs all parties to agree a formula on how long proroguing should last for. For example, using the current case, this is the longest session of parliament for many, many years. Creating a legislative programme after such a long session could take longer than if the session had only been 6 months(?).
Beyond that, when a govt is cavalier, maybe the parliamentary standards committee could/would get involved - I don't know, just guessing, but it does need some sort of catch all to it.