Since gTLD became a thing, we've seen people finding creative ways to use these new domain extensions, making creative branding domains to using a gTLD instead of hoarding .com/.net for their next big project. There was a lot of good to this, The creative marketing and branding agencies in the recent past came up with the most unique ideas to brand a business online using these generic domain extensions. However, since there were an abundance of domain extensions available, scammers also got strong with their game and started using gTLDs as a phishing/email bombing tool. Some of these gTLDs are always on a dirt cheap sale to promote their use and it has made it rather easier for scammers & spammers to buy out random domains in bulk causing mass blacklisting of such domains world wide. With regards to the usability stand point, some domain extensions have become such a victim that legitimate businesses choose to stay away with them. Very recently, my consultation firm (ORNG) had also got rid of about 10 such domains that we used for testing. The challenges we faced primarily was bad email delivery, difficulty to get good page rank despite having unique and high value content & a lack of trust between the product and it's intended audience.
This is a companion discussion topic for the original entry at https://www.tekduke.com/email-spammers-have-trashed-tld-reputation/