That's rubbish. I've had solicitors actively advise on the best way to avoid inheritance tax. Avoidance isn't illegal. Evasion is.
So I would suggest you completely ignore this post.
If you are talking about evading CGT or SDLT then you may have a point but avoiding IHT is perfectly legal.
It's not a question of either avoidance or evasion. There are rules for everything and if you are ignorant of these rules you can fall foul of the tax man. You can not just transfer money even between family members without implications. You certainly can not just transfer properties. It is best to seek the guidance of a solicitor so you don't end up in court.