spamming

I was recently reading a blog online about the "The Top 15 Youtubers who have had been banned" ranging from gambling on Runescape, squishing little critters with boots, to drama and the list goes on. One that caught my eye however was "Banned from spamming tag words." Which I understand is...

Is this no longer allowed on YouTube?? Saw some videos about it, but they are a few years old. Can't find anything recent. Was it discontinued because it is considerded spamming?? Very curious, any info would be helpful. Thanks!!