Your opinion doesn’t counter evidence such as Farron’s political record.
Actually Farron failed to vote in favour of equality legislation for gay people in pretty well all votes that count - he was absent for the key vote on gay marriage, voted no on Equality Act (Sexual Orientation) Regulations etc.
Where he voted in favour, was typically secondary - e.g. he voted for divorce for gay couples, but that hardly a great step forward, the advance was allowing gay people to marry, which he failed to support in its crucial third reading.