Mao might be seen more sympathetically ITTL, but in general his reputation might be more comparable to the Kaiser or Tsar Nicholas: a moronic despot who allowed his pride to lead his nation toward disaster.
Nah, Mao will still be seen as despotic and evil, the only difference is that he got ousted too quickly by Stalin, but there were signs before the POD in 1953 that Mao was going to be no better and given China's bigger population, he had the potential to be even worse. For example on the wikipedia article "Mass Killings under Communist Regimes when talking about China it mentions:
"The first large-scale killings under Mao took place during
land reform and the
counterrevolutionary campaign. In official study materials published in 1948, Mao envisaged that "one-tenth of the peasants" (or about 50,000,000) "would have to be destroyed" to facilitate agrarian reform.
[139] The actual number killed during land reform is believed to have been lower, but at least one million people.
[137][140] The suppression of counterrevolutionaries targeted mainly former
Kuomintang officials and intellectuals suspected of disloyalty.
[141] At least 712,000 people were executed, while 1,290,000 were imprisoned in
labor camps."
Also I think some savvy geopolitical experts or alt history writers ITTL will figure even if Stalin died in 1953, Mao would just get to run China into the ground with similar programs he envisaged as well as the fact that China is too big to be controlled by the Soviets for long and a split was inevitable, only a war between the two I can see is debated in TTL, I can imagine in TTL's alternate history.com, the Sino-Soviet War is usually pushed back in Stalin dead TLs to around the 1960s as they'll point to border disputes between China and Russia. The idea of no Sino-Soviet War is probably ASB to the inhabitants of this timeline.
On the bright side though, it appears with no Vietnam War, the Khmer Rouge's rule in Cambodia will be averted, the Khmer Rouge could possibly still exist but mostly as an underground guerilla movement. The communist regimes in Ethiopia, Mozambique, Angola, and Somalia will most likely be averted as Communism is discredited, they might become radicalized Syndicalists though since in one update, it mentions Syndicalism taking shape in Africa from Gbenye, and some people could probably use it for malevolent gains, for example in the update "The Rest" it mentions:
"Gbenye argued that the primary goal of an agrarian society should be to get industrialized, and that the most efficient way to do so was central planning. Thus, he advocated for a committee, selected by the congress of trade unions, whose job would be to organize the industrialization. Unlike other committees this one would have real power, being able to set things such as the goals for industrial output, set up factories, and move encourage the movement of workers from rural areas to the cities to staff these factories."
Seems pretty clear but I think this can be twisted by men like idk Idi Amin, Mariam, etc. to slightly change this into becoming something like forcing people out of farms into cities to build factories in slave labor with oppressive committees giving unrealistic quotas to industrialize quickly to catch up and rival the west. Though the update mentions a Syndicalist wave in the 1970s with no foreshadowing of bad things but who knows.
Unrelated Side Note: With the purging of so many officials like Molotov, Kaganovich, etc. a lot of things from their personal accounts on things in the Soviet government will never be known to the public since they would never give out memoirs of their life or thoughts like the book "Molotov Remembers" will never exist in TTL so alot more speculation will be used I think.