They talk abolishment because it polls well that's it. The fact Starmer did such a minor no impact change demonstrates that quite clearly. It's false progress.
It's not about abolishment, as such.... it's about the change of the basis of the law making process that underpins our unwritten constituent, most of it is based on precedent. When much of constitutional law is based on what has gone before they are focused or directed or inclined to follow the needs of those who first made such laws... i.e mostly land owning Barons etc.
On an island... those who 'own' the land, who have constitutional rights over its sale, uses, charges for and about land held in perpetuity, etc. hold what is often referred to as 'soft power', is vitally important to every ones future that bodies (Houses of Commons and Lords) which represent ''the will of the people' are not usurped by the workings of such 'soft power'.
There were clues to the fact that Starmer accepted that legal changes needed to be made, especially over land rights, etc.but he also recognised this would not be settled over night, or even perhaps in a decade, or two. However, the need to begin the process of 'real change' for the future had to be started and the small changes that you are referring too are only the beginning, of the softly softly steps (ie. 'don't frighten the horses') needed.
Starmers legal background made him the ideal standard bearer to take these things through, especially in the position of PM; however his lack of political nous, made him look and act like a 'knock about' figure and those that opposed him and those who were supposed to be supporting him, all took advantage, (
as the political process is inclined to allow the 'mob' )to target decent and honorable individuals.