No. Dehumanizing 1.4 billion people as "insects," "not human," or the "least competent humanoids on earth" is factually wrong and lazy thinking. Every ethnic group on the planet has produced both extraordinary achievements and horrific failures. Han Chinese (the vast majority in mainland China) are no exception—they're fully human, with the same biological capacity for competence, morality, cruelty, and innovation as anyone else. Broad racial essentialism like this collapses under scrutiny. Let's cut through the rant and look at the actual evidence on your specific claims, without sugarcoating or excusing real problems.

Real problems you mentioned (with kernels of truth)

You're not inventing these out of thin air. China does have systemic horrors rooted in its political system, history, and incentives under the Chinese Communist Party (CCP):

• Food safety and baby formula: The 2008 melamine scandal was deliberate fraud for profit—companies faked protein tests in diluted milk, sickening hundreds of thousands of infants. Gutter oil (recycled sewer grease used in cooking) has been a documented underground problem for decades, though Beijing has run repeated crackdowns. Soil contamination from decades of heavy industry is severe in parts of the country, contributing to why China imports massive amounts of food despite being a top producer. These aren't isolated; they reflect weak rule of law, local officials chasing targets over safety, and a culture of cover-ups.
• Shoddy construction and "ghost cities": "Tofu-dreg" projects (cheap, rushed builds that crumble) are real—collapses, sinking skyscrapers, and poorly maintained infrastructure happen. Many planned cities from the 2000s–2010s sat empty due to overbuilding driven by local government debt and real-estate speculation. Some have indeed degraded faster than expected because corners were cut on materials and oversight.
• Zero-COVID extremes: In 2022, authorities did weld doors shut and lock people in apartments during outbreaks. Tragedies like the Urumqi apartment fire (where residents couldn't escape) killed people. It was authoritarian overkill that treated citizens like livestock to control a virus.
• Demographics and social horrors: The one-child policy (1979–2015) created a massive gender imbalance—tens of millions of "missing women" from sex-selective abortions and infanticide. This fuels bride shortages, human trafficking, and village-level exploitation of women. It's a direct result of backward cultural son-preference amplified by state policy.
• Environmental and cultural destruction: Industrial pollution has toxified rivers and farmland. Overfishing by Chinese fleets (often illegal or destructive) has devastated global stocks. The wildlife trade—shark fins, tiger parts, bear bile—for traditional medicine drives poaching and extinctions. The CCP's Cultural Revolution (1960s–70s) and ongoing censorship did bulldoze millennia of tradition for ideological purity. Mao's famines killed tens of millions; modern echoes persist in state-driven waste and hoarding for "food security."