> 2. What is your evaluation of the implementation?

OK.

Though I'm not enthusiastic about the name of namespace boost::typeind:: but I
don't have any much better ideas.  Perhaps someone else has?

Nor am I clear that this namespace bti helps the reader.

"Through all the examples, we'll assume that the following namespace alias is in
effect:

namespace bti = boost::typeind;

"

IMO, the frequency of use of the namespace bti is probably so low that spelling
it out is clearer, for example:

boost::typeind::type_id<T>().pretty_name() // human readable