Amazing how cheap clowns are ready to brick 300 USD worth of hardware to not have to pay 30 USD and get an amazing product. Enjoy! While tons of people have been enjoying a great product with tons of features and XCI files for months now
The best part is that they clearly said that they were using SXOS and they didn't brick at all. Guess you didn't read that part.
The only way you could ever brick is if you were either incompetent or you were doing something that most people wouldn't be doing. SXOS can't prevent incompetence, so the people who are too stupid to launch a payload via PC or mobile could still brick their console. It can't prevent experimentation either. This is why the $300 argument is weak. I'd rather have a $300 brick than a $330 brick.
The only feature that SXOS has over other CFWs is the XCI loader. This is where a person's preference comes in. If they prefer NSP, they can get it anywhere they want but if they want to use XCI backups, they need to purchase SXOS. This argument is fine, but not everyone cares for XCI backups and the misconception about it being safer isn't necessarily true.
In the past I'd say that their dongle and jig are worth it, but there are less expensive alternatives out there now that are just as easy to use as TX's product. R4, Atmosphere-NX, etc.
At this point, there aren't that many things you could say to convince someone to buy this product. However, there might be something new whenever SXOS v2.0 releases.
This isn't to discredit TX or anything. They released their product first and had released it to some decent reception. Those who purchased their product have every right to be happy with their purchase. Just know that the reasons you bought it back then might not be good reasons for someone else to buy it right now.