[fwn]

> maybe [...] there was actually a legitimate, technical reason for choosing a restricted API

Without any further explanation that sounds rather unlikely.

The change is very publicly criticized and keeping legitimate reasons that could've increased support secret is a really counter intuitive strategy.

Apart from that I think it's not far-fetched or particularly conspiratorial to assume that an ad-company might have an interest in restricting ad-blocking.

"When you hear hoofbeats, think of horses not zebras."