News of chandrayan 3 suggests that GOI is interfering hard in ISRO's projects, i don't like it. BJP most probably pushed for chandrayan 2 though I don't have any sources but some parts of me believes that it was rushed due to the political pressure and probably wasn't tested enough.
Entire Chandryaan, Mangalyaan, Human Spaceflight Programme and nearly all other space exploration programs were started to due to BJP's interference AFAIK. Before Atal Bihari Vajpayee unloaded his dreams on ISRO, ISRO was nothing more than a satellite launcher and again most projects were put on backburner when Congress came.
In logical terms, Gaganyaan should be prioritised over Chandryaan. Chandrayaan-3 is nothing more than a repeat mission of Chandrayaan-2 to just react to failure. It is better delayed and launched as an in-situ lunar sampling or sample return mission and it can progress slowly with minute budget along. A mission-repeat is a waste.
Demonstration of human spaceflight and a space station like settlement in orbit will impart ISRO a far better experience in critical technologies which will be useful for long term deep space missions.
USSR, USA and China, all focused on achieving a permanent human settlement in orbit before even exploring moon, leave alone deep space. A space station is more critical than a Mars rover.