Consider the parabola $y^2=4x$ . Let $S$ be the focus of the parabola. A pair of tangents drawn to the parabola from the point $P\left(-2,1\right)$ meet the parabola at $P_1$ and $P_2$. Let $Q_1$ and $Q_2$be points on the lines $S{P}_1$ and $S{P}_2$ respectively such that $P{Q}_1$ is perpendicular to $S{P}_1$ and$P{Q}_2$ is perpendicular to $S{P}_2$. Then, which of the following is/are TRUE?