In principle I agree, but the reality is that for the most part folks have very little time and interest in such things. The natural world is so divorced from the daily life of many that it's an inconvenience. Present storms are an example, the increase in the number of rats is another. To stultify every well meaning attempt because it 'might' cause unforeseen harm is akin to, 'an eye for an eye', that really only leaves everyone blind.
To encourage, to actively engage them, and the younger generations, means actually being involved, not sitting back saying with hindsight, "well, that's a shame that they've gone, pity we didn't do anything about it".
I do take on board that that applies also to your original passerine bird nesting sites, but the reality that most face is that there's not a lot of room in suburbia for wildlife unless we actually put some effort into it.
To encourage, to actively engage them, and the younger generations, means actually being involved, not sitting back saying with hindsight, "well, that's a shame that they've gone, pity we didn't do anything about it".
I do take on board that that applies also to your original passerine bird nesting sites, but the reality that most face is that there's not a lot of room in suburbia for wildlife unless we actually put some effort into it.