Why would a minor change in the title worry any sensible person?

That is rather my point - I think. If the intended change is first thought to be so minor - why impose it and run any risk of upsetting anyone? And why needlessly judge them - as sensible or not? Are not all posters are entitled to their (moderately expressed) view?

But to go off the main point - which is setting the example of simple good manners and being seen to be friendly. I do have a problem with bringing attention online (where this is not anything to do with the point of the post) to poster's ethnic origins - nationality - sexual preferences - religion - politics or any thing else that may divide us.

It is the love of music that has brought all the contributors to this public forum together and this universal language can transcend most of our differences - if we allow it to.

Yes it might sometimes be useful to know from a thread title - what the originator's country of origin was or where the thread deals with a particular country - but most times it is not. I see a risk that in automatically imposing these type of changes to thread titles - that we will get (even further and needlessly) divided along national lines instead of learning from our national differences.

Is it really worth the risk upsetting any poster by imposing any change to the thread title - that they have carefully chosen - without asking them first?

For some reason that i can't see - you may well think that it is worth this risk. I suggest that even if one other poster did not think it was worth taking this risk - that it would be better to oblige them and would do little real harm to anyone else - to do this.