Yes you absolutely can blame them for it. This type of shift (and a million other possible permutations) is why we invented the concept of "charters" around the same time we invented writing.

The entire point of the pre-commitment device is because you (or other stakeholders) are anticipating that your thinking will get distorted over time. If you could be trusted to make such a decision in the future then you wouldn't have written a charter to bind yourself.