I have a more cynical reading of the sudden actions: Legal liability. Among a history of ToS violations, we finally had ones that weren't muddy & deniable, but represented a bright line crossing in support of illegal action.
An argument could be made (especially "securities fraud") that these platforms have their own legal liability in supporting these illegal actions because they allowed them despite violating their own ToS.
I'm sure there was some belief along the line of "it's the right thing to do" as well. There was also probably some consideration that with Democrats having both Congress & the White House their actions, among those in power, were less likely to be interpreted as too heavy handed. Ultimately though I think legal liability may have been the largest factor.
An argument could be made (especially "securities fraud") that these platforms have their own legal liability in supporting these illegal actions because they allowed them despite violating their own ToS.
I'm sure there was some belief along the line of "it's the right thing to do" as well. There was also probably some consideration that with Democrats having both Congress & the White House their actions, among those in power, were less likely to be interpreted as too heavy handed. Ultimately though I think legal liability may have been the largest factor.