That's a bad reason. Even if the source isn't at the same, high standard, you should still cite it to:

a) Tell others were to go if they want more context.

b) Give credit for where you got the idea or for doing the legwork of putting it together.

c) Allow auditing of the ultimate origin of a claim and e.g. identify whether one data point is getting repeated like it's two data points. https://en.wikipedia.org/wiki/Information_cascade