I haven't heard those in my areas of the internet, but they would be funny. The Note 7 did cost them what most people would call a lot of money but it's a rounding error in their cash flow. I don't think people fully realize how huge Samsung is. Before the Note 7 was reused and parts recycled, the losses were calculated at $5.3 billion for the whole project. That's pretty much about what they make in pure profit in two months in their chip business alone:
http://www.gsmarena.com/samsung_is_the_biggest_chip_maker_in_q2_of_2017-news-26453.php
They overtook Intel by netting a small country's GDP in PROFIT just from their chips alone, which nobody really gives them much credit for compared to their "bigger" divisions.
And did you know they make nuclear submarines for the Korean military as a hobby?
https://en.wikipedia.org/wiki/Samsung_Heavy_Industries
Plus, if it mattered much, despite the Note 7, they just posted their highest ever profits in their smartphone division, earning exactly twice as much as Apple did on iPhones in Q2:
http://www.gsmarena.com/samsung_q2_financial_guidance_points_to_highest_ever_profits-news-26061.php
Even if it wasn't the case and the Notes and Galaxies never existed, there is nothing in the smartphone area that could hurt Samsung much, they are too spread out and wildly financially successful in too many fields. The Note 6 didn't even come out in freaking Europe, as Samsung decided it's not worth it to them. The third most popular smartphone brand around, lol! They pulled out of the laptop market in Europe too, deeming it not profitable enough to carry operations for computers in that region. They ditched cameras, despite being the third biggest company making them, globally, and being profitable, just not profitable enough in their books, deciding it's better to just make sensors and sell them to other companies for more money instead.
You can see they are very trigger happy with pulling out of retail markets as they see them as less profitable, and they don't hurt them a bit.
And that part just describes Samsung Electronics, a single branch of a gigantic conglomerate.
I think people are not giving Samsung enough credit for still sticking to "we're making stuff for the people" thing, selling coolest tech at low profit margins compared to literally any huge company, making the bulk of their money out of other businesses instead. I understand that people like to hate on the giants, but wishing them bad is really shooting oneself in the foot, as throughout the years they were a very fair company, keeping more tech markets in check than literally anyone else, and providing healthier competition than anyone else, and by far. I could not count the amount of times they shook markets with "more advanced products and for less" in the tech space alone, and not only for popular products. People like to go for the underdog, but there is no underdog around that would be a better company for a regular consumer than Samsung. Even OnePlus was loved with their "phones for the people", but showed they're a yet another shitty company playing dirty as soon as they made some money.
And about the Note 8, it seems to be a S8+ with a stylus and dual cam - while I don't approve of it, their implementation seems to be by far the best, with two mid-sized sensors, both optically stabilized and with the secondary cam having a reasonable optical zoom lens. Also, I prefer its less rounded design.
That said, historically the S series were getting Note cameras more often than not, so I suspect the S9 will have a very similar dual cam setup, instead of a larger sensor. While it's a good setup for a dual cam, I would have much preferred if it had a single better camera instead and Samsung didn't follow the trend started by a "different" company that just failed to deliver a better sensor.