Your original statement was
Those that just vandalize random art or monuments that have nothing to do with climate change can fuck right off.
From the links you supplied, in two of the three cases (Stonehenge and Flowers) no damage was done. In the case of Stonehenge, the protestors chose a marker that wouldn’t damage the monument. For Flowers, I’d assume they knew about the glass. But that’s me giving them credit.
For the third (Warhol’s soup), damage was done but remediated.
The protestors are being unfairly accused of fucking up art without justification. Others have used that to dismiss the protests and the cause, which is bullshit.
The protestors have a good cause, they’re getting people to (at least) talk about climate change, and they’re taking the punishment for their actions.
If it had worked, it would have been cool. Sadly, it often failed to register movements.