If comparing the two I'd give BJ some credit for seeking at least some consensus on approach within his party. Brexit was the dirty deal he did to get the backing of the right wing press but the rest of his policy was fairly benign (fron a tory perspective). He accepted that he needed to raise tax to fix social care even if many right wingers would just prefer to wish the problem away. Maybe not the same mix and rates of tax options that Left wing types would pick but the basics of tax more to spend more was there and had support. His failure on many other aspects of leadership overshadow all this.
I get the vibe that the right wing think tanks and press influencers thought that maybe if the BJ and possibly Tory regime is coming to an end they should just go all out. See what they could get away with.