Whether it is good to wear a ring on the thumb depends on individual beliefs and practices.
According to Sadhguru, wearing a thumb ring draws certain occult influences and negative energies, which could be detrimental to your psychological framework and wellbeing in general. Only those doing certain types of Sadhana should wear rings on the thumb finger. (Sadhguru, 02-Jan-2022)
Therefore, from this perspective, it is generally not considered good to wear a thumb ring unless one is specifically engaged in certain spiritual practices.
