At some point in time, to some degree, you will eventually be disappointed by every politician or person who takes a politically-connected position.
It is unusual for a politician to remain consistent over the long term; and some of them genuinely change based on new information and/or revised rationale.
What you really need to beware of is forming an important opinion or conclusion based on news reports. News reports are usually incorrect or radically misleading. Those who base a world-view on media reports are destined to be jerked around.
A whole lot of truth in that post.