I completely disagree.
How much "progress" have we had in the past two decades under our fabulously stable and balanced two-party system?
Plenty of change but none of it good. People are now poor, unhealthy, reliant on debt or state aid, can't afford childcare, can't find good schools, unmotivated, rude, disrespectful, lazy and full of addictions.
Every system or institution you care to name is corrupt or breaking under the strain. The environment is treated like a cesspit, the UK is decades behind other European countries with eg waste disposal and green building, and doesn't even know that it is!!
Greed, waste, corruption, complacency and entrenched attitudes are what hamper progress and change.