The most sick thing is to inject it in the muscle and I think it is the method with most damage and risks.
We are not stupid, we are creative with overthinking old routes and do it better.
About the subcutane problems with lumps. You can prevent it if you use thinner oils. I have test several products (all enanthate) ant the perfectest seems to be Testosteron Depo because it has the thinnest oil base. If I inject this subcutane I cant locate it directly after injecting and also not after longer time. Other products leave feelable bubbles which are not so perfect for the tissue. Bit better this is in the fat tissue then in the muscle!