Do you think the transitive property of equality is superfluous when we have the substitution property?

There exists both a transitive property and a substitution property of equality. I think that having both of them is redundant, and I favor the substitution property over the transitive property.
The transitive property of equality states that If a=b & b=c, then a=c.
The substitution property of equality states that if a=b, then a & b can be substituted for each other in any expression.
Source

It seems as though whenever the transitive property is applied, it is implicitly the substitution property. So, why go out of the way to label it as its own property?