I suppose the issue is that for the vast majority of nominations we can understand why someone might be considered valuable in the HoL (through their particular experience) or their influence (party treasurers and donors for example).
We might disagree with such nominations but it's transparent as to why they have been thanked in such a fashion. It is a huge honour and within the scheme of things very few people ever get such an opportunity to wield such influence.
Add to that it is a lifetime role. We do pay for it.
So whilst Owen may well be highly committed to the job, questions were always going to be asked why her and not another SpAd.