In practice there may be many roadblocks in that, so this isn't absolute. But if that's the case, it's still on the people who notice the roadblocks to convince most everyone these are real. Without that any protest will lack widespread support and be suppressed regardless.
Arguing that the system has escape hatches is just an excuse. The escape hatches have also failed, clearly, since they either haven't been used (which is their fault) or their use did not fix the system.
there are many NGOs aligned with the current protests, and they receive substantial government funding, because they are in symbiosis. the regime doesn't provide funding for ideologies that actually threaten its interests.
public opinion has now reached a tipping point, any further vandalism/arson/violence will not provide a net benefit to the regime. that's why now they finally try to stop it.