Sadly, I think you are probably right.
However, I don’t get the impression that’s the view of many older Tory voters who have voted Conservative all their lives and are now disillusioned and find themselves in a position where it’s very difficult to know who to vote for or even if to vote at all.
Traditional centre right voters, of the type that in the past held the views of one nation conservative politicians such as Ken Clarke, feel totally alienated by the current Conservatives. Most of these people were also very strongly against Brexit. These are people who are Conservatives at heart, but many for the first time in their lives, even if somewhat begrudgingly, could vote for Labour.
I think that's going to be true for many; I always think of myself as a "traditional Tory voter" in that the principles of the party more closely align with my views than for other parties - low tax, individual liberty, personal responsibility.
However the Conservatives lost me last time round, in 1997, and I didn't vote for them then and I haven't voted for them since.
I was in my mid-30s at the time.
This next election is going to scoop up another tranche of voters. Amongst so many things, the culling of the "one nation" Conservatives as you mention was highly symbolic and showed that the party in power has changed radically. It's not about seeking consensus and trying to be inclusive, but instead to act radically and dogmatically and be prepared to break the law to get your own way.
The polls following the Conservative party conference show that the event didn't do the party any good, it's only going to be remembered for negative things - and symbolically the HS2 cancellation shows that nobody in Westminster cares about "levelling up" and Tories can't keep their promises.
There's always a large number of voters who would vote for a donkey if it had a blue rosette pinned to it, that's always been the case, but I suspect that the antics of the current party will have cut through to a greater percentage of these people, and it's been debated here and will continue to be debated but I think that just not having an incompetent opposition will be enough for the next election.