Taxability of Interest on REC Bonds (54EC)

on going through certain articles, it's mentioned as taxable

https://www.incometaxindia.gov.in/Pages/utilities/Tax-Free-bonds-or-Certificates.aspx
As per above notification it is exempt.
What are your opinions on this?

The following shall be eligible to subscribe to the bonds:—
(a) Retail Individual Investors (RIIs);
(b) Qualified Institutional Buyers (QIBs);
(c) Corporates.- (including statutory corporations), trusts, partnership firms, limited liability partnerships, Co-operative banks, regional rural banks and other legal entities, subject to compliance with their respective applicable legislations; and
(d) High Networth Individuals (HNIs).
Tenure of bonds.
2. The tenure of the bonds shall be ten, fifteen or twenty years.

in all these bonds, the lock in period is minimum 10 years.. for 54EC bonds, it's 3years.

I think these notifications are not applicable to your query. anyway let's wait for experts input