A53 is used for low-power and low-cost applications... It's a "good enough" CPU that has really good performance/area.
Perfect performance counters for OoO is really hard.
OoO also makes BP more useful. An OoO processor without BP isn't very useful because there aren't that many instructions between branches... So, generally, modern OoO processors dedicate far more resources to BP.
Who's efforts? From what I can see, only North America and Europe have joined in this so-called international embargo. In fact, not even Mexico has any sanctions against Russia.
What's the motivation for including companies based in countries that haven't called for trade restrictions?
Sure, I agree fully that countries based in Europe or North America should follow government policy or relocate, but I'm not expecting companies to behave outside of the policy detailed by their government.