I agree, but it’s just not a good quality to me, from experience. The most glib politicians are often the least invested in their positions. It’s easy to take positions when there is no price for those positions.
All politicians everywhere from Alcibiades on are likely to be this way (or seem to be).
History should be your guide. People don’t change, just their circumstances. And that, BTW, is a fundamental tenet of conservatism.
NB - Churchill was a glib young man, a flip-flopper and party changer. A “Vivek” indeed. Later, not so much.