During Qubayev's tenure, thousands of Crimean Tatars lost their land and were deported to the Urals as part of collectivisation and dekulakization campaigns.
He first began to align with communism in 1918, as part of a general shift by Crimean Tatars from Milliy Firqa to the Russian Communist Party.
[3] During İbraimov's subsequent murder trial, Qubayev served as a public prosecutor alongside fellow Crimean Tatar communists İlyas Tarhan, Bilâl Çagar [uk], and Abdulkadyr Gralov.
According to a 1938 report by Eduard Salyn [ru], chief of the NKVD in the Crimean ASSR, 16,000 people were stripped of their property and set to be evicted on 26 March 1930.
Qubayev protested these measures at a local party conference in Dzhankoi Raion, accusing the Soviet government of practicing Great Russian chauvinism in a matter that was destructive to Crimea's peoples, primarily the Crimean Tatars.