I don't think there is a connection between network fees and accumulation of Bitcoin so network fee shouldn't be a problem that would hold you back from investing on Bitcoin because there is no fee associated during your Bitcoin accumulation, so all you just need is to invest on your weekly target, however I have not heard were any fees would prevent someone from there persistent accumulation of Bitcoin, so possibly you can clarify me on the connection the fees has against your Bitcoin accumulation.
Usually it won't affect but there were times when ordinals paying fees and almost stalled actual Bitcoin for a month and forced them to pay like huge amount let's say 500-1000sat/vb and in that case it definitely affected people from transacting and let's say if someone is investing $50 or $100 every week they would hesitate at that moment or they have to trust the exchange by holding it there which is not recommended since exchange is prone to hacks at anytime.
So that might affected in a way but things back to normalise almost since the Q2 and there's no signs that those kind of spam attack is possible since the hype around ordinals faded away which means it can't be a problem anymore.
Unless he was talking about the withdrawal fees from the exchange which always 5x or even higher than the fee needed depends on the exchanges.