[danamit]

They are talking here about mining pools I suppose since the biggest 4 mining pools account for more than 50% of validated blocks.

Also the word is "disrupt" so it means some time of chaos, the mining pools never tried to disrupt Bitcoin because they have no incentive to do so.

[JamesSwift]

That assumes they are economically motivated. As we've seen in recent attacks on other coins, if its a possibility for someone to burn the system down out of spite/malice then the economic incentive doesn't matter.

[danamit]

1. If half of Bitcoin users (hashrate-wise) wanted to disrupt the network out of malice ignoring their economic wellbeing, say a movement similar to GME/WSB, then they can disrupt it.

2. We can go into lower levels and find a number of ISPs specially level 1 ones being able to disrupt the Bitcoin network. Some other single points of failure I can imagine are common routers firmware.

Can Bitcoin never be disrupted? no, does it have mechanisms in place that make it unlikely to be disrupted? yes.

[m00dy]

it is nothing about incentive. Let's say a mining pool wants to disrupt the bitcoin network, do you think that pool will keep its hashrate ? I don't think so.

[danamit]

Disrupt is creating chaos short term, I don't imagine it to last more than 1 hour, but that's enough to call it disrupt.